Answer:
If you tap your knee, the signal to act is carried via your somatic nervous system to the muscles in your knee. In contrast, the signals that pass via the autonomic nervous system are involuntary and act primarily to regulate your body's internal environment. This involuntary nerve system is further organized into three divisions. If you need a sudden burst of energy, your sympathetic nervous system is activated to help you act quickly. In contrast, if you are relaxing and conserving energy, then it is your parasympathetic nervous system that is primarily in action. The third division is your enteric nervous system which helps control the components of the digestive system.
Explanation:
Peripheral nervous system (PNS) is the nervous system that contains nerves and ganglia outside the central nervous system (CNS). PNS is divided into:
somatic (voluntary) nervous system-controls the movements of the skeletal musclesautonomic (involuntary) nervous system-controls the smooth muscles and glands and thus it is the regulator of the major body functions. It is subdivided into tree groups:sympathetic ("fight and flight") system-responsible for stressful and active situations (but also in normal conditions)parasympathetic ("rest and digest") system-opposite to sympathetic, responsible for the maintenance of body's activities at rest.enteric nervous system-controls the function of the gastrointestinal tract.The signal to move your knee after tapping is carried via the somatic nervous system, whereas involuntary regulation of the body's internal environment, like during sudden energy bursts or relaxation, is governed by the sympathetic and parasympathetic systems respectively. The enteric system controls digestive functions.
Our nervous system is organized into two broad anatomical divisions: the central nervous system (CNS), consisting of the brain and spinal cord, and the peripheral nervous system (PNS). The PNS is further organized into two functional divisions: the somatic and the autonomic nervous systems.
If you tap your knee, the signal to act is carried via your somatic nervous system to the muscles in your knee. In contrast, the signals that pass via the autonomic nervous system are involuntary and act primarily to regulate your body's internal environment. This involuntary nerve system is further organized into three divisions: the sympathetic, parasympathetic, and enteric nervous systems.
If you need a sudden burst of energy, your sympathetic nervous system is activated to help you act quickly. In contrast, if you are relaxing and conserving energy, then it is your parasympathetic nervous system that is primarily in action. The third division is your enteric nervous system, which helps control the components of the digestive system.
Imagine that a man is scratched by his cat. A phagocyte near the scratch site recognizes and engulfs a bacterium. Shortly thereafter, more phagocytes arrive in the tissue surrounding the scratch. Why? Select all correct choices.Other phagocytes are recruited to the scratch site by antigens secreted by the bacteria.Other phagocytes are recruited to the scratch site by cytokines produced by the bacteria.Other phagocytes are recruited to the scratch site by antigens secreted by the initial phagocyte.Other phagocytes are recruited to the scratch site by cytokines secreted by the initial phagocyte.
Answer:
Other phagocytes are recruited to the scratch site by cytokines secreted by the initial phagocyte.
Which of the following is not a major type of stimulus that triggers endocrine glands to manufacture and release hormones? A) EnzymaticB) HumoralC) Hormonal D) Neural
A. Enzymatic. The three major types are humoral, hormonal, and neural stimuli
Enzymatic is not a major type of stimulus that triggers endocrine glands to manufacture and release hormones, as the major types include humoral, hormonal, and neural stimuli, option A is correct.
The question focuses on understanding the mechanisms through which hormones are released in the body. The major stimuli include humoral, hormonal, and neural stimuli. Humoral stimuli are related to changes in ion or nutrient levels in the blood, hormonal stimuli involve the release of hormones in response to other hormones, and neural stimuli occur when nerve impulses provoke the secretion of hormones. Given this information, the option that does not fit as a major type of stimulus for hormone release is enzymatic, as enzymes are more directly involved in metabolic processes rather than the direct triggering of hormone release.
The nerve cell shown has branches that develop during cell specialization. which of these functions does a nerve cell's branches help the cell perform
Communicating with other cells
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Is the frog completely adapted to life on land
Answer:
No
Explanation:
There are numerous different species of frogs around the world, coming in different sizes, colors, and behaviors. All frogs though are still amphibians, practically meaning that they are animals that live both in water and land, or rather they need both in order to survive. At first look, the frogs maybe seem as well completely adapted to terrestrial life, but that is not the case, as the frogs still need water in order to be able to survive because their skin is not made to function without water for prolonged periods of time, they still have a body and limbs that are made for swimming, and they need water for hatching their eggs, as well as for the development of newly hatched frogs, as they do not have any limbs when they are born and can only swim until they develop them.
Which of the following is a characteristic of the pituitary gland?
produces insulin, which regulates blood glucose levels
produces hormones that regulate cell metabolism
produces hormones that regulate other glands
produces hormones that help the body respond to stress
I think it would be that it produces hormones that regulate cell metabolism
Name two autotrophs that you see in the lion king and what type of organism are they
Two autotrophs that you see in The Lion King are grass (plants) and trees (plants).
- Grass (Plants): Grass is a type of autotroph that undergoes photosynthesis to produce its own food using sunlight, water, and carbon dioxide. It serves as a primary food source for many herbivores in the film, such as antelopes and zebras.
- Trees (Plants): Trees are another example of autotrophs featured in The Lion King. They also undergo photosynthesis to synthesize organic compounds, providing habitat, shade, and food for various organisms within the ecosystem depicted in the film.
- Autotrophs: Autotrophs are organisms that produce their own organic compounds from inorganic substances, typically through photosynthesis or chemosynthesis.
- Importance in Ecosystems: Autotrophs form the base of food chains and food webs, providing energy and nutrients for heterotrophic organisms.
- Ecological Balance: The presence of autotrophs like grass and trees contributes to the ecological balance of the ecosystem portrayed in The Lion King, supporting the diverse array of life depicted in the film.
Corrina is a 25-year-old pregnant woman. her need for _____ is 50% higher than before she became pregnant
Answer:
Folate
Explanation:
Corrina is a 25-year-old pregnant woman. Her need for folate is 50% higher than before she became pregnant.
Why folic acid is important before and during pregnancy?Folic acid and folate are important components before and during pregnancy because when the baby is developing early during pregnancy, folic acid helps form the neural tube.
Folic acid is very important because it can help prevent some major birth defects of the baby's brain (anencephaly) and spine (spina bifida). Folate helps to form DNA and RNA and is involved in protein metabolism. It plays a key role in breaking down homocysteine, an amino acid that can exert harmful effects on the body if it is present in high amounts.
Therefore, Corrina is a 25-year-old pregnant woman. Her need for folate is 50% higher than before she became pregnant.
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Where does the eustachian tube lead in a frog?
Answer:
Eustachian tube in frog leads to the lateral wall of the nasopharynx
Explanation:
Eustachian tube is known to be canal or tube that connects that join the middle ear to the nasopharynx. Thus, Eustachian tube functions by controlling the pressure within the middle ears by making the air pressure in the middle ear to be equal to the outside body. However, Eustachian tube in frog leads to the lateral wall of the nasopharynx by originating or extending from the anterior wall of the middle ear.
What does a pyramid of net production look like in a real ecosystem, and what are the trophic efficiencies? the pyramid below represents the data collected from h. t. odum's work on the silver springs ecosystem in north-central florida. (note that odum used the units kilocalories [kcal] instead of joules [j].) drag the labels to the pyramid to indicate the trophic efficiency from each trophic level to the next?
A pyramid of net production shows energy distribution across different trophic levels in an ecosystem. For instance, in the Silver Springs ecosystem, the energy available decreased progressively from primary producers to tertiary consumers. This reduction is due to the metabolic use of energy by organisms and heat loss, often referred to as 'net primary productivity'. The efficiency of energy transfer between each trophic level, called the 'Trophic Level Transfer Efficiency' (TLTE), also declines as you ascend the pyramid.
Explanation:A pyramid of net production illustrates the distribution of energy in different trophic levels in an ecosystem. The pyramid demonstrates how energy diminishes as it ascends from producers to higher-level consumers. In Howard T. Odum's study on the Silver Springs ecosystem in Florida, primary producers generated 20,819 kcal/m²/yr, while primary consumers generated 3368 kcal/m²/yr. The secondary consumers and tertiary consumers generated significantly less energy - only 383 kcal/m²/yr and 21 kcal/m²/yr respectively.
The reduction in energy as one ascends the levels is due to organisms using energy for their own functions - such as respiration - which results in metabolic heat loss. This is part of the 'net primary productivity' of an ecosystem. For instance, in Silver Springs, 13,187 of the 20,810 kcal/m²/yr were used for respiration or lost as heat, leaving 7,633 kcal/m²/yr of energy available for the primary consumers.
The term 'Trophic Level Transfer Efficiency' (TLTE) refers to the efficiency of energy transfer between two successive trophic levels. It is calculated by the formula 'production at present trophic level × 100 / production at previous trophic level'. The TLTE between the first two trophic levels in Silver Springs was around 14.8%, highlighting the significant energy loss at each level.
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An upright biomass pyramid in a real ecosystem, studied by H. T. Odum at Silver Springs, shows primary producers at the base with a large amount of kilocalories per square meter per year, with trophic levels above showing progressively less energy due to trophic efficiencies averaging around 10%. These pyramids represent the net productivity in an ecosystem and illustrate energy loss through the trophic levels.
A pyramid of net production in a real ecosystem, such as the one studied by H. T. Odum at Silver Springs, displays the flow of energy through different trophic levels of an ecosystem. In an upright biomass pyramid, primary producers constitute the broad base, followed by successive, narrower trophic levels consisting of primary consumers, secondary consumers, and so on. The numbers describe the net productivity at each trophic level in kilocalories per square meter per year (kcal/m²/yr).
Trophic efficiency between levels typically averages around 10%, with energy being lost as heat or used for metabolic processes at each step up the pyramid.
Odum's data showed the following net productivity: primary producers at 20,810 kcal/m²/yr, primary consumers at 1,103 kcal/m²/yr, secondary consumers at 383 kcal/m²/yr, and tertiary consumers at a mere 21 kcal/m²/yr. The significant decrease of energy from one trophic level to the next demonstrates the energy loss that is intrinsic to ecological food webs. This loss is also reflected in the concept of trophic efficiency, a measure of the energy transfer efficiency between two successive trophic levels.
Comparing different ecosystems, such as those found in Silver Springs and the English Channel, can illustrate variations in biomass pyramids. While Silver Springs exhibits an upright pyramid, the English Channel has an inverted biomass pyramid due to the rapid turnover rate of phytoplankton. Biomass pyramids and energy flow models like these are vital for understanding ecosystem structure and function.
30 points for one sentence!!
How does a person eating a meal resemble the Calvin-Benson cycle in plants?
the Calvin cycle is the process by which CO2 is converted to glucose and then other sugars(mainly sucrose). That it how autotrophs such as plants make make their own carbs and energy needed for cellular respiration and cell activity.
Answer:
They are like heterotrophs.
Explanation:
Like plants, they use photosynthesis to make their own food, carbohydrates, etcetera.
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On average, errors occur in DNA synthesis only once in every ten billion nucleotides incorporated. Which of the following does NOT contribute to this high fidelity of DNA synthesis? (A) Complementary base-pairing between the nucleotides (B) Tightening of the DNA polymerase around its active site to ensure correct pairing before monomer incorporation (C) Proofreading by the 3'-to-5' exonuclease activity of the enzyme to correct mispairing even after monomer incorporation (D) A strand-directed mismatch repair system that detects and resolves mismatches soon after DNA replication (E) None of the above
Answer:
(E) None of the above
Explanation:
All of the answers contribute to the high fidelity of DNA synthesis.
Accuracy of the DNA replication is achieved thanks to various mechanisms such as:
DNA polymerase activity (high processivity)-ability of the enzyme to copy long stretches of DNADNA polymerase proofreading-ability to recognize its own mistakes and fix themCell's surveillance-cell monitors its DNA status, checks for the damageMismatch Repair-cell contain repair machinery which recognizes DNA helix deformities, removes and replaces the portion containing the mismatch etc.All the mechanisms provided in options A to D contribute to the high fidelity of DNA synthesis by ensuring correct base pairing, proofreading newly added nucleotides, and repairing mismatches post-replication. Among the options provided, the one that does NOT contribute to this process is (E) None of the above.
Explanation:The high fidelity of DNA synthesis is attributed to several key mechanisms. Firstly, complementary base-pairing ensures that each new nucleotide is correctly matched with its opposite base on the template strand. Secondly, DNA polymerase tightens around its active site which helps confirm correct pairing before incorporating the monomer. Thirdly, proofreading activity, particularly the 3'-to-5' exonuclease function of DNA polymerases, catches and corrects any mispairing even after monomer incorporation. Lastly, the mismatch repair system acts post-replication to find and repair any remaining mispaired nucleotides.
Among the options provided, the one that does NOT contribute to this process is (E) None of the above. This is because all the listed mechanisms (A-D) are indeed involved in maintaining the high accuracy of DNA synthesis.
Receptors that are __________ bind to chemicals outside of the cell, and this binding process causes a chemical response on the inside of cells.
Answer:
proteins
Explanation:
What structures solve the end replication problem for linear chromosomes?
Answer:
Eukaryotes have solved the end-replication problem by locating highly repeated DNA sequence at the end, or telomeres, of each linear chromosome.
Explanation:
Telomeres are stretches of DNA at the ends of the chromosome, They protect the genetic data and make it possible for cells to divide.
What are the benefits of the International Space Station? Select all that apply.
A. creates a spirit of international cooperation
B. increases knowledge about the composition of planets
C. gains information about the long-term effects of space flight
D. increases knowledge of our solar system and its components
i believe it would be A C and D
Answer:
C. gains information about the long-term effects of space flight
Explanation:
An International Space Station is a laboratory that is in space and is permanently inhabited by human beings who carry out scientific studies and research of a spatial nature. Basically, this station (which orbits the earth and is the residence and place of work of several researchers) has as main objective to provide information about the planet earth and about some experiments carried out with zero gravity. However, its main purpose is to surpass long-term space travel, assessing all the defects, advantages and risks of these trips.
Farmers sprayed leechi trees to suppress populations of scale insects. this also killed the populations of a predatory lacewing that controlled the numbers of scales. soon the spraying did no good, and the damage to the leechi from the scales was greater than before spraying had occurred. few predatory lacewings exist in the trees now because
Final answer:
Predatory lacewings, which help control scale insects, were killed by pesticide spraying. This caused an imbalance, leading to an increased scale insect population and greater damage to leechi trees.
Explanation:
The predatory lacewings that controlled scale insects on leechi trees were killed due to the spraying of pesticides by farmers. This led to an increase in scale insect populations since their natural predator numbers dwindled. Biological control, such as the introduction of natural enemies of pests, has been shown in numerous studies to be a more sustainable and cost-effective method to suppress pest populations without causing harm to non-target species or posing risks to human health and the environment.
The water hyacinth is an invasive species that can spread extremely fast, blanketing a water surface in a very short period of time. It can limit boat traffic, swimming, and fishing, and it can deprive native plants and animals of sunlight and oxygen, thus reducing the local biodiversity. This situation demonstrates _______.a.how migratory patterns change in response to alterations in an ecosystemb.the effects of symbiosisc.the effects of local evolution or migration on an ecosystemd.how changes in biodiversity impact an ecosystem Please select the best answer from the choices provided
Answer:
how changes in biodiversity impact an ecosystem
Explanation:
Water hyacinth is a free-floating perennial aquatic plant. This plant is native to tropical and sub-tropical South America. As an invasive species, when it grows in the new environment causes severe ecological or economic harm. By growing where it not native, it can spread extremely fast, blanketing a water surface in a very short period of time. It can limit boat traffic, swimming, and fishing, and it can deprive native plants and animals of sunlight and oxygen, thus reducing the local biodiversity.
This is how an ecosystem effects biodiversity impact. When a biological species grows in the new environment, It can affect the biodiversity or environment that can affect the biological species.
LT: Explain the importance of genetic diversity in a population.
A swamp contains a high genetic diversity of frogs. Toxic chemicals were released into the swamp. How can genetic diversity help the frog population survive?
Answer:
Because some frogs might be able to survive and the ones that cant die off. The frogs that survive get to reproduce which wouldn't be possible if they all had the exact same genetic code, if they were all the same they would have all died or all survived there would not be room for differences.
Explanation:
what is ATP in simple terms?
Adenosine triphosphate also known as ATP is a chemical that helps give the body energy
Answer: Adenosine triphosphate (ATP) is a nucleotide used in cells as a coenzyme. It is often called the "molecular unit of currency": ATP transports chemical energy within cells for metabolism. Every cell uses ATP for energy. It consists of a base (adenine) and three phosphate groups.
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Explanation:
What Structure formed by the crossing over of the optic nerves
The optic chiasm is an X-shaped structure formed by the crossing of the optic nerves in the brain. The optic nerve connects the brain to the eye.
The optic chiasm is the shape that is created when the optic nerves cross. It is present at the base of the brain and has an an X-shaped structure.
Optic chiasma is the location of the crossing of the optic nerves from each eye to the opposing side of the brain.
Vision depends on the optic nerve. It's an extension of your central nervous system, which also consists of your brain and spine.
The eyes send electrical signals to the brain through the optic nerve. In order to see, the brain has to process this sensory data.
From the retinas of the eyes, the optic nerves transmit visual data to the brain. Information from the right eye is delivered to the left side of the brain through the optic chiasm, and information from the left eye is sent to the right.
Binocular vision requires the crossing over of the optic nerves.
Therefore, optic chiasm is the structure formed by the crossing over of the optic nerves.
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25 points!!
Describe an egg cell, a sperm cell, and a somatic cell in these terms:
diploid, haploid, male, female.
Egg cell: It's the female reproductive cell in oogamous organisms. (Female) (Haploid)
Sperm cell: The male reproductive cells. (Male) (Haploid)
Somatic cell: Body cells. (Diploid)
these are your Answer i tryed (Haploid)
(Male) (Haploid) (Diploid)
Explanation:
Eggs, sperm, urine and wastes all empty into what structure?
Eggs, sperm, urine, and wastes all empty into the cloaca.
The cloaca is a chamber in the digestive tract of amphibians, reptiles, birds, and many mammals. It is where the digestive, urinary, and reproductive tracts all empty into. In some animals, the cloaca also serves as a copulatory organ.
The cloaca is a complex structure that is essential for the reproduction and survival of many animals.
In frogs, the cloaca is located at the posterior end of the body. It is a single opening that receives urine from the ureters, sperm from the vasa deferentia, and eggs from the oviducts. The cloaca also opens into the rectum, which is the final portion of the digestive tract.
When a frog mates, the male deposits sperm into the female's cloaca. The sperm then travel up the oviducts and fertilize the eggs. The fertilized eggs then travel down the oviducts and into the cloaca, where they are laid.
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How does the primary transcript in the nucleus of a prokaryotic cell compare to the functional mrna?
A) the primary transcript is larger than the mrna
B) the primary transcript is smaller than the mrna
C) the primary transcript and the mrna both contain introns
D) the primary transcript is the same size as the mrna
Answer:
None of the answers is correct, because prokaryotic cell doesn't have nucleus
Explanation:
In eukaryotic cell, primary transcript is RNA synthesized via transcription in the nucleus. After processing it becomes mature mRNA. The processes of processining are addition of the 5' cap, 3'-polyadenylation, and alternative splicing (excision of introns). Because during the processing of RNA introns are removed the primary transcript is larger than the mRNA.
Which of the following is characteristics of a steroid hormone action?
internal receptor binding
second messenger activation
protein phosphorylation
cell-surface receptor binding
exchanger of GDP with GTP
Answer:
internal receptor binding
Explanation:
This is because steroid hormones are lipids by nature (usually composed of cholesterol) so they are hydrophobic. This means that steroid hormones can easy pass through the membrane and bind to their internal receptors.
Internal receptors also known as intracellular receptors have DNA binding domain and when hormones bind to them DNA-binding site becomes exposed. Hormone-receptor complex gets into the nucleus and binds to regulatory regions of the DNA. Cellular response is gene expression.
When the cord precedes the baby down the birth canal, pressure on the cord can cause hypoxia in the fetus. this life-threatening situation is called ________ umbilical cord?
Answer:it Is called the "umbilical cord prolapse"
Explanation:in normal birth the baby comes out of the birth canal before the umbilical cord but in some emergency cases such the umbilical cord prolapse the cords slips ahead of the baby and moves into the cervical canal or vagina. This is basically a obstetrical emergency because the cord is at high risk of compression leading to blockage of oxygen and blood to the fetus.
Treatment :
A C section is usually necessary if such an emergency is to occur
A dna molecule produced by combining dna from different sources is known as
Answer:
Recombinant DNA:
Explanation:
Which descriptions of evolution are accurate? Check all that apply. It occurs within an individual's lifetime. It occurs over many generations. It applies only to an individual. It applies to an entire population. It happens at the genetic level.
Answer:
-It occurs over many generations.
-It happens at the genetic level.
Answer:
-It occurs over many generations.
-It happens at the genetic level.
Explanation:
Biological evolution corresponds to the process of modification and adaptation of species over logns periods of time.
The current diversity of living beings is the result of processes of transformation and adaptation of species to various environments, constituting biological evolution.
The theory of neodarwinism considers the following mechanisms as contributing factors to evolutionary changes:
Mutations
The mutation corresponds to any change in the genetic material of an organism, which may give rise to a new trait. If this new feature offers the individual any advantage, the allele tends to be preserved by natural selection.
Genetic Drift
Genetic drift is a process of random change in the allelic frequencies of a population. Genetic drift changes the allelic frequency of a population at random. It does not work to produce adaptations.
Natural selection
Natural selection is one of the fundamental mechanisms of evolution. Through it, the individuals best suited to a particular condition are selected. Thus, they are more likely to survive, reproduce and transmit their traits to descendants.
Indicate what happens to the concentration of pb2+ in each cell. indicate what happens to the concentration of in each cell. the left half-cell will increase in concentration; and the right half-cell will increase in concentration. the left half-cell will decrease in concentration; and the right half-cell will increase in concentration. the left half-cell will increase in concentration; and the right half-cell will decrease in concentration. the left half-cell will decrease in concentration; and the right half-cell will decrease in concentration.
In a concentration cell, Pb2+ ions move to achieve equilibrium, causing the high-concentration half-cell to decrease and the low-concentration half-cell to increase, until both attain equal concentrations and a cell potential of zero.
Explanation:When analyzing what happens to the concentration of Pb2+ in a concentration cell, it is vital to understand the principles governing its function. A concentration cell operates such that the half-cell with a higher concentration of a redox species works toward equilibrium with the lower-concentration half-cell.
In the given scenario, we have a concentration cell with Pb2+ ions, where one half-cell has 1.0 M solution and the other contains a dilute solution. The Nernst equation is used to determine the voltage and concentrations at equilibrium.
As the concentration cell operates, Pb2+ ions will migrate to achieve equilibrium. For the half-cell with higher concentration, you can expect a decrease as the chemical reaction proceeds and Pb2+ is consumed.
Conversely, the half-cell with an initially lower concentration will experience an increase as it receives Pb2+ ions. Ultimately, the concentration of Pb2+ ions will equalize in both half-cells, with the cell potential reaching zero at equilibrium.
Cortical nephrons can be distinguished from juxtamedullary nephrons by
A. their location within the renal cortex.B. their filtration rate.C. the size of their renal corpuscle.D. whether they drain into a collecting duct or directly into the renal pelvis
Answer:
A. their location within the renal cortex
Explanation:
Cortical nephrons are located high in the renal cortex and their loop of Henle is short. On the other hand, juxtamedullary nephrons are located near the medulla (low in the renal cortex) with long loop of Henle (deep in the medulla). Another difference between these two type of nephrons is that juxtamedullary nephrons produce more concentrated urine.
Final answer:
Cortical nephrons are distinguished from juxtamedullary nephrons by A. their location in the renal cortex and their loop of Henle.
Explanation:
Cortical nephrons can be distinguished from juxtamedullary nephrons by their location within the renal cortex and by certain structures of the nephron. While both types of nephrons are located in the cortex, cortical nephrons have a short loop of Henle that does not dip beyond the cortex. In contrast, juxtamedullary nephrons are located close to the renal medulla and have a longer loop of Henle, which allows them to regulate urine concentration more effectively.
The renal cortex can be easily identified in a dissected kidney due to its lighter color compared to the rest of the kidney. Although the assertion that juxtamedullary nephrons have a larger glomerulus and hence a higher filtration rate might be logical, the distinguishing factor in this context is primarily their anatomical differences, specifically the length of the loop of Henle. Both nephron types eventually drain into a collecting duct, so the method of drainage is not a distinguishing characteristic.
If color is an inherited trait in beetles
What happens when a scientific theory is shown to be an accurate description of a phenomenon? A. It's tested by other scientists to replicate the experiment and confirm the findings. B. It's made a scientific law. C. It's put in science textbooks so that students can learn about that theory with the expectation that it won't change. D. It's accepted by all in the scientific community and no further testing is conducted.
Answer:
When a scientific theory is shown to be an accurate description of a phenomenon, It's tested by other scientists to replicate the experiment and confirm the findings.
Explanation:
A scientific theory is a tested hypothesis about any natural phenomenon. Scientists conduct several experiments and when several scientific methods approve a hypothesis repeatedly, it is termed as a scientific theory. However if updated scientific methods provide opposite findings, a scientific theory can be rejected or modified.
Answer:
a
Explanation: