Answer:B. Fossils
Explanation:
fossils is the remains or impression of a prehistoric plant or animal embedded in rock and preserved in petrified form. it has nothing to do with continental drift.
Answer:
BExplanation:
is correct because i took the test and aced it :D yayHow many grams of CaCl2 are in 0.75M solution with a volume of 1L
83.235 grams of CaCl2 is required to make 1 litre of 0.75M solution.
Explanation:
Molarity or molar concentration is the number of moles of solute that can be dissolved in 1 L of a solution.
let us find the number of moles
n=C*V Concentration is 0.75M
Volume is 1000ml.
n= 0.75*1
n= 0.75
This means there are 0.75 moles of CaCl2 in 1000 ml of solution of .75M.
Molar mass of CaCl2 is = 40.08+ 2(35.5)
= 110.98 gms
Thus 1 MOLE OF CaCl2 weighs 110.98
so 0.75 moles will weigh 110.98*0.75
= 83.235 grams of CaCl2 is required to make 1 litre of 0.75M solution.
In two to three paragraphs, explain why the last generations of woolly mammoths couldn’t meet these factors to evolve in a changing environment. Also explain how data such as the fossil record and DNA evidence can identify the factors that can lead to the evolution of a species.
The woolly mammoths didn't managed to evolve to their changing environment because their food source was quickly disappearing, the climate changed rapidly, and they reproduced very slowly.
Explanation:
The woolly mammoths were huge animals that fall into the category of megafauna. They thrived during the last ice age, but they went extinct in most of their habitat soon after the end of the ice age. It is a general rule, when it comes to extinction, that the larger animals which are highly specialized are the most vulnerable to it.
In the case of the mammoths, they were huge animals perfectly adapted to the ice age climate, and were specialized when it came to their food sources. With the climate changing rapidly, the vegetation too started to change very quickly. A big problem also was the slow reproduction among the woolly mammoths, as it took too much time for the next generation to come along, and the changes in their environment were way to fast so that they can adapt in time.
With every next generation coming too late, the mammoths were too slow to follow the changes. Their food was disappearing, their numbers constantly going down, the gene pool became smaller and smaller, and they died out in most of their habitat. Only small populations managed to survive until 3,000 BC, and that was on an island north of Russia, but once the resources were gone on the island those mammoths too went extinct.
Learn more about the extinction of the megafauna of the last ice agehttps://brainly.com/question/13148293
#learnwithBrainly
The last woolly mammoths could not evolve to changes in climate and human hunting. Fossil records and DNA analyses can trace these changes, showing how species evolve over time.
Explanation:The last generations of woolly mammoths were unable to adapt to their changing environment due to several factors. One major reason was the rapid climate change associated with the end of the last Ice Age. Their thick woolly coats and large sizes were adaptive features for the cold environment, but they became drawbacks as the earth got warmer. In addition, human hunting put extra pressure on their population.
Data from fossil records and DNA analyses can reveal how species evolve over time. Fossil evidence demonstrates physical changes in ancestral and descendant species, showing the path of evolutionary change. DNA evidence can trace the genetic mutations which arose over generations and were selected for, due to their adaptive benefits. These mutations are what ultimately drive the process of evolution.
Learn more about Woolly Mammoths here:https://brainly.com/question/19657667
#SPJ3
Primary growth or lengthening of plants results from mitotic division in cells of which tissue?
A.
Axillary buds
B.
Lateral meristem
C.
Apical meristem
Answer:
The correct option is C) Apical meristem
Explanation:
Apical meristem can be described as undifferentiated meristematic cells found in the tips of the shoots and roots. The main function of the apical meristem is to start the process of cell division at these parts. In the apical meristems, cells tend to grow by undergoing numerous mitotic divisions. As result, primary growth and lengthening of the plant occur. Hence, the correct option is option C.
Other options, like option B, is not correct because it is the site where secondary growth occurs.
Which of these would improve the water quality in a watershed? A. reduction in pesticide use B. use of more fertilizer C. destruction of wetlands D. erosion of more topsoil
Answer:
A
Explanation:
Reducing pesticide use, preserving wetlands, and preventing erosion of topsoil would all improve the water quality in a watershed.
Explanation:Improving water quality in a watershed can be achieved through various methods:
Reducing pesticide use: Pesticides can contaminate water sources, so reducing their use helps prevent water pollution.Not destroying wetlands: Wetlands act as natural filters, removing pollutants and improving water quality. Destruction of wetlands can lead to increased pollution in the watershed.Avoiding erosion of topsoil: Erosion can carry sediment and pollutants into water bodies, degrading water quality. Preventing topsoil erosion helps maintain clean water in the watershed.Learn more about Water quality in a watershed here:https://brainly.com/question/32173599
#SPJ3
Which type of cell makes pus when it dies?
A.) lymphocytes
B.) neutrophils
C.) antigens
D.) macrophages
Answer:
B) Neutrophils
Explanation:
When the body detects an infection, it sends neutrophils, a type of white blood cell, to destroy the fungi or bacteria. During this process, some of the neutrophils and tissue surrounding the infected area will die. Pus is an accumulation of this dead material. Many types of infection can cause pus
The right response is neutrophils (option B). The most prevalent form of white blood cell in the human body, neutrophils play a crucial role in the innate immune system.
What happens when neutrophils die ?When neutrophils expire, their interior, which may include pus, is released. Dead neutrophils, bacteria, and other cellular waste make up pus. One of the five categories of white blood cells, or leukocytes, in the human body are neutrophils.
They are in charge of engulfing and eliminating bacteria, fungus, and other pathogens. They constitute the body's first line of defence against infection. When a neutrophil expires, its inside, which may contain pus, is released.
Dead neutrophils, bacteria, and other cellular waste make up pus. It frequently has a yellow or green colour and can represent an infection. In contrast, white blood cells such as lymphocytes, antigens, and macrophages are all engaged in the adaptive immune response.
Due to the fact that they are not in charge of engulfing and eliminating bacteria and other diseases, they do not normally discharge pus when they die.
Learn more about pus at:
https://brainly.com/question/30640165
#SPJ5
Using the model presented, what is represented by A? Defend your answer.. A) A represents RNA. Translation is the synthesis of an RNA copy of a segment of DNA . B) A represents RNA. Transcription is the synthesis of an RNA copy of a segment of DNA . A represents protein. Translation is the synthesis of a protein using DNA as a template for the assembly of the protein D) A represents proteinTranscription is the synthesis of a protein using DNA as a template for the assembly of the protein.
Answer:
B
Explanation:
Although we cannot see the model present, the only correct option here is B.
A cannot be correct, as translation represents the synthesis of protein from an RNA template.
C cannot be correct, as protein synthesis uses RNA as a template.
D cannot be correct, as transcription is the synthesis of RNA from DNA.
B is correct, as transcription is the synthesis of an RNA copy of a segment of DNA
What is the shape of rna
Single stranded helices. Is composed of the four base pairs Adenine, Guanine, Cytosine, and Uracil.
Most of the dissolved substance in sea water is:
nitrogen
hydrogen
chlorine
sodium
Answer:
The correct option is C) chlorine
Explanation:
Sea water contains salts in abundance. It can be described as the water which makes up the oceans and the seas. It is known to contain approximately 96.5% water and 2,5 percent of salts. Sodium and chloride ions are the most abundant salt ions to be found in the sea. The concentration of chloride ions is 0.546 mol/kg and the concentration of sodium ions is 0.469 mol/kg. Hence, chloride ions are slightly abundant than sodium ions.
Answer:
it would be chlorine!!
Explanation:
Which situation is in equilibrium?
Answer:
The correct answer is: B. The amount of air in a room never changes.
Explanation:
A system is said to be in equilibrium when the net components in the system remains constant (no increase or decrease) with time.The air in a room never remains constant and always undergoes dynamic movement into and out of the room. At equilibrium, the net air in the room remains constant as amount of air exiting the room is balanced by the amount of air entering it.Evaporation of water in the form of water vapour from a cup into the atmosphere is not in a state of equilibrium as the amount of water evaporating from the cup is not replaced in the cup so there is a net decrease in water level in the cup.The decrease in nitrogen percentage in a room is not in equilibrium as the nitrogen concentration of the room is not constant.A blade of grass growing taller is not in equilibrium as a constant height of the grasses is not maintained.The table represent the thickness top density and bottom density of the different layers of the earth. In most of the layers, the deeper the layer, the thicker and denser the layer becomes. At which location in Earth’s interior exhibits a change in the trend?
Answer:
Inner Core is the answer.
Answer:
a
Explanation:
BRAINLIEST PLEASE ANSWER FASTWhich of the following is NOT a way that biodiversity is important to an ecosystem?
A Different types of decomposers are available to break down many types of waste.
B Biodiversity makes ecosystems more stable.
C Biodiversity can increase the rate of extinction.
D If one food source goes extinct other food sources are more likely to be available.
Biodiversity is not important to increase the rate of extinction.
Answer: Option C
Explanation:
Bio diversity is nothing but a measure of variation at the species, genetic, and ecosystem levels. In other words, Bio diversity can be termed as “Totality of species or genes etc.” They always tend or help to make the biodiversity more stable and consistent.
They also play a major role in making food source available if any other food source become extinct. They will never be used to improve the rate of extinction in turn they can only be useful to reduce the rate of extinction. Hence we can conclude option C as correct answer.
(7) How might the Punnett Square below be used as evidence to support the
idea that genetic information is passed onto offspring through meiosis
followed by fertilization?
pollen
o
b
A. When the female gamete for a
purple flower is pollinated with a
male gamete for a purple flower,
the offspring is purple.
B. The Punnett Square shows with
certainty what an offspring would
look like if two organisms produce
offspring
C. The pistil and pollen are diploid
cells and donate two alleles to each
offspring, resulting in the traits for the
organism.
D. The Punnett Square shows the
possible combinations of alleles when
chromosomes replicate from meiosis.
Answer:
C
Explanation:
The pistil and pollen are diploid cells and donate two alleles to each offspring, resulting in the traits for the organism supporting the idea that genetic information is passed onto offspring through meiosis followed by fertilization.
What is fertilization?
Fertilization, often spelled fertilisation and sometimes referred to as generative fertilisation, syngamy, and impregnation, refers to the process of fusing gametes in order to produce a new individual organism or progeny and to kickstart that organism's growth.
During meiosis, a diploid cell divides into two haploid daughter cells, and during fertilization, two haploid daughter cells, known as gametes, join together to form a diploid zygote.
The processes that take place during fertilization can be broken down into four distinct phases: 1) the preparation of the sperm, 2) the recognition and binding of the sperm to the egg, 3) the fusion of the sperm and egg pronuclei, and 4) the activation of the zygote.
Learn more about fertilization, here:
https://brainly.com/question/23135135
#SPJ5
List five examples of mutations. Then classify each as harmful, helpful and neutral and explain your reasoning.
Answer:
1) sickle cell anemia: Sickle cell anemia is caused due to a point mutation by which a change in the nucleotide causes the code for producing the amino acid valine instead of the amino acid glutamic acid. It is a harmful mutation.
2) Klinefelter’s Calicos: Better known as the Klinefelter’s Syndrome, Klinefelter’s Calicos is a type of genetic mutation in which the person has the pattern of XXY for sex chromosomes i.e the person has an extra X chromosome. It is a harmful mutation.
3) Colour blindness: It is a sex linked mutation caused by two genes coding for the sight of red and green colour on the X chromosome. It is a harmful mutation.
4) Lactase persistence: A mutation allowed the humans to produce lactase enzyme as a result of breast feeding. This is an example of beneficial mutation.
5) HIV resistance: A 32 base pair sequence change in CCR5 helps humans to get resistant against HIV. it is a beneficial mutation.
Final answer:
Mutations are changes in the DNA sequence that can be classified as harmful, helpful, or neutral. Examples include sickle cell anemia (harmful), lactose tolerance (helpful), neutral mutations, resistance to HIV (helpful), and those leading to cancer (harmful). Exposure to mutagens like cigarette smoke can induce harmful mutations, leading to cancer.
Explanation:
Examples of Mutations and Their Classifications
Mutations can be classified as harmful, helpful, or neutral depending on their impact on an organism's survival and reproduction. Here are five examples of mutations with their classifications:
Sickle cell anemia: Harmful. The mutation causes red blood cells to become misshapen, leading to health complications.
Lactose tolerance: Helpful. This mutation allows adults to digest lactose, providing a nutritional advantage in certain populations.
Neutral mutation: Neutral. Many mutations in DNA do not result in noticeable changes to an organism's phenotype or impact on survival.
Resistance to HIV: Helpful. A mutation in the CCR5 gene can provide resistance to HIV infection.
Cancer: Harmful. Mutations in genes controlling cell growth can lead to the uncontrolled cell division characteristic of cancer.
Exposure to Mutagens and Cancer
Exposure to mutagens, such as cigarette smoke, can cause cancer by inducing mutations in genes that control cell division, leading potentially to uncontrolled growth and tumor development.
Truth About Mutations
True or False: Mutations are always caused by exposure to toxic substances. False. Mutations can occur naturally during DNA replication or be influenced by environmental factors.
True or False: Some mutations can make chromosomes longer or shorter. True. Mutations can result in changes to chromosome length through various mechanisms such as duplications or deletions.
Please this is Urget!!!
I posted this 4 time but no answer please I really REALLY REALLY NEED THIS
PLEASE LOOK AT THE IMAGE
HELP ME PLEASE
I NEED THIS
PLEASE HELP
PLEASE RESPOND I WILL NAME YOU BRIANLIST PLEASE HELP
PLEASE!!!?!,?!!?,74)3$3
If it’s blurry just put some glasses on and try your best to read it sorry not sorry but please hurry up and respond in lesson five minutes sorry if I sound rude but I really need this
Answer:
Island Arcs
Explanation:
Which of the following best explains why the latitude of a region influences its climate?
A. The latitude of a region determines its proximity to the ocean.
B. The latitude of a region determines the landforms present in the area.
C. The latitude of a region determines how much sunlight the area receives.
D. The latitude of a region determines its elevation above sea level.
Answer:
"The latitude of a region determines how much sunlight the area receives" this statement says about why the latitude of a region influences its climate.
Explanation:
The latitude determines the sunlight of the area receives because, the more the latitude the sharper will be angle of the sun's rays which will reach the surface. Means that the rays of the sun are being spread over the broader area. Hence, More the latitude receive will be the less than the lower latitude areas located nearer to the equator. As, we know the sun's ray first strikes over the Earth's surface which is near the equator as these places receive direct solar radiation. At greater latitude the solar radiations gets spread in more area and hence the temperature also reduces.
Answer:
C. The latitude of a region determines how much sunlight the area receives.
Explanation:
Did it on Study Island, plus latitude determines how close it is to the equator and therefore how directly it gets hit by the sun.
Question 7 (3 points)
Which of the following describes the law of original horizontality?
Answer:
"Folded sedimentary layers were originally laid down flat and later deformed." describes the law of original horizontality.
Explanation:
In terms of structural geology, the folds happens when the one over the another are piled up on a flat as well as planar structure i.e. sedimentary strata. Which sometimes are bent or may be curved because of the permanent deformation. Both upward as well as downward folds occurs in the sedimentary fold. Which is known as the anticline or the syncline. There are three major folds in case of the sedimentary layers they are monocline, anticline and syncline. Simple bend layers are called as the monoclines.
what is a negative consequence of a mandatory quarantine
Answer:
Quarantine may create heavy psychological, emotional, and financial problems for some people. To be effective, quarantine demands not only that at-risk people be isolated but also that they follow appropriate infection control measures within their place of quarantine.
Explanation:
losing your mind is a negative consequence of a mandatory quarantine
describe how negative feed back would work to maintain body temperature, blood glucose and blood ph
Answer:
These conditions remain stable because of physiologic processes that result in negative feedback relationships. If the blood glucose or calcium rises, this sends a signal to organs responsible for lowering blood glucose or calcium. The signals that restore the normal levels are examples of negative feedback.
Explanation:
Which of the following are found in plant cells but not animal cells?
ribosomes
vacuoles
chloroplasts
plastids
Answer: Chloroplasts, Plastids
Explanation: Both plant and animal cells have ribosomes.
Vacuoles are present in a plant cell and for an animal cell sometimes the vacuoles appears for a short of time then vanishes.
Answer: Chloroplasts
Explanation: Plants make their own food
Which of these events happens immediately before cell division occurs? A. The cells genetic material is copied
B. The cells surface area to volume ration increases
C. The cells volume decreases more than its surface area
D. The cells DNA is distributed evenly throughout the cell
Answer:
A The cells genetic material is copied
Explanation:
Cell division is the process by which a single cell divides into two daughter cells. Each daughter cell needs to inherit an entire copy of the genetic material, therefore, before cell division occurs, the DNA is replicated. This allows the cell to divide the genetic material between two daughter cells, such that each cell inherits the complete genome.
Final answer:
DNA replication, which occurs during the S phase of the cell cycle, happened immediately before cell division. The incorrect event during interphase is the separation of sister chromatids, which occurs during anaphase of mitosis. DNA replication is vital for genetic continuity in the daughter cells.
Explanation:
The event that happens immediately before cell division occurs is A. The cell's genetic material is copied. This process is known as DNA replication and occurs during the synthesis phase, or S phase, of the cell cycle, before the cell enters mitosis or meiosis. DNA replication ensures that each daughter cell will have its own complete set of chromosomes, which is essential for maintaining the genetic continuity of an organism.
To answer the multiple-choice question provided, the event that does not occur during some stages of interphase is D. separation of sister chromatids. This event happens during mitosis, specifically during anaphase, which is after interphase has concluded.
Thus, DNA replication is the critical step that precedes cell division, guaranteeing that all genetic information is successfully and equally distributed to the two new cells.
Which is the function of the cell membrane? A. Store materials in fluid. B. Help regulate turgor pressure within a cell. C. Control what materials move into and out of a cell. D. Use sugar in the presence of oxygen for cellular respiration.
i believe the answer is c
Please select the word from the list that best fits the definition
The stress force that pulls on the crust where two plates are moving apart is called
syncline
anticline
footwall
hanging-wall
tension
shearing
strike-slip
reverse
Answer:
5, E, Tension
Explanation:
Answer:
e
Explanation:
have a good day
a 78 year old patient is taking lizbro for diabetes and Gabapentin for seizures what would a medical coder bill for
Answer:Medicare Part D
Explanation:
The correct billing for the medications would include the appropriate codes for both Lizbro (presumably a brand name for a diabetes medication) and Gabapentin.
For Lizbro, which is likely a brand name for a combination of Lisinopril and Hydrochlorothiazide used to treat diabetes-related hypertension, the coder would use the National Drug Code (NDC) for the specific strength and quantity prescribed. For example, if the patient is taking Lizbro 20-12.5 mg tablets, the coder would find the NDC code that corresponds to this strength and the number of tablets dispensed.
For Gabapentin, which is used to treat seizures, the coder would again use the NDC code for the specific strength and quantity of the medication provided to the patient. Gabapentin is available in various strengths, so the exact NDC code would depend on the dosage prescribed, such as 100 mg, 300 mg, or 400 mg capsules or tablets.
In addition to the NDC codes, the coder would need to include the appropriate Healthcare Common Procedure Coding System (HCPCS) code. For oral medications like Lizbro and Gabapentin, the HCPCS code J7697 (Drug, oral, non-extended release, not otherwise classified, each) is commonly used for billing. The coder would also need to specify the days supply for each medication.
Therefore, the billing would include:
1. NDC code for Lizbro (specific to the strength and quantity).
2. NDC code for Gabapentin (specific to the strength and quantity).
3. HCPCS code J7697 for each medication.
4. Days supply for each medication.
It is important for the medical coder to verify the most current NDC codes and any payer-specific guidelines for billing these medications. Additionally, the coder must ensure that the billing reflects the exact medication, strength, and quantity provided to the patient, as well as comply with the documentation provided by the prescribing healthcare provider.
Compare the advantages and disadvantages to a species that result from exponential or logistical growth. Why do you think cares have evolved to reproduce as rapidly as possible, while lynx appear to have intrinsic or social growth limits
Answer:
Advantage: The species resulting from exponential or logistic growth will grow and reproduce faster. In this way they will able to propagate in a faster manner.
Disadvantages: Exponential growth will allow the reproduction to occur at a much faster rate but after a certain time there will not be enough resources to feed all the wide number of organisms grown. As a result, the population will decline again.
A student listed characteristics of a classroom aquarium ecosystem. Which
characteristic is a biotic component of the aquarium ecosystem?*
The water temperature is 23 degrees Celsius
O
The pH of the water is between 6.5 and 6.8
O
The ammonia is controlled with a filter that uses two type of bacteria,
The lighting is supplied by natural sunlight and a fluorescent light bulb.
Answer:
The correct answer is "The ammonia is controlled with a filter that uses two type of bacteria."
Explanation:
The Biosphere on earth is composed of all the ecosystems, while each ecosystem is composed of the abiotic and biotic components and their mutual interactions. Aquarium is an example of aquatic ecosystem.Abiotic components constitute the non-living part of the ecosystem.Biotic components constitute the living part of the ecosystem.In the aquarium, The abiotic components include the air, water, heat, minerals, sunlight, fluorescent light.The biotic components include the aquatic plants, aquatic animals and the bacteria (in the filter attached to the aquarium).These bacteria are responsible for fixing dissolved nitrogen gas present in the water of the aquarium to ammonium and are called nitrogen-fixing bacteria. Free living bacteria like cyanobacteria or blue-green algae are examples of nitrogen-fixing bacteria.Fixation of dissolved nitrogen gas to ammonium and then conversion of ammonium to nitrites and nitrates (done by other bacteria) is essential because plants (terrestrial or aquatic) can use only nitrates as the source of nitrogen for the purpose of metabolism.In the list provided, the characteristic 'ammonia is controlled with a filter that uses two type of bacteria' is the biotic component of a classroom aquarium ecosystem. Biotic factors refer to the living elements within an ecosystem, in this case, the bacteria.
Explanation:In the context of an aquarium ecosystem, the biotic component mentioned in the given options is the control of ammonia with a filter using two types of bacteria. As a concept of Biology, 'biotic' components refer to living elements in an ecosystem, which in this case would be bacteria. The other components listed such as the water temperature, the pH of the water, and the lighting are all abiotic factors, or non-living, physical characteristics of the environment.
Learn more about Biotic component here:https://brainly.com/question/1162547
#SPJ6
Pls help. I am really stuck.
The tree gathered the mass from the environment.
Explanation:Trees are the producers of the environment who can undergo the process of photosynthesis. The process of photosynthesis involves the conversion of carbon dioxide and water chemically into glucose and oxygen in presence of sunlight. This glucose is then metabolized by the plant cells into different compounds like lipid, proteins, carbohydrate and different others. These compounds make up the plant body which makes the plant grow into much bigger plant. This makes the mass of the plant increase. Thus, the plant which was planted 10years ago gathered the mass from the environment and converted them into body building products which increased the plant mass by 250kgs.
Gene therapy is a form of
selective breeding
artificial selection
cloning
genetic engineering
Answer:
Genetic Engineering
Explanation:
Genetic engineering aims to modify the genes to enhance the capabilities of the organism beyond what is normal.
Answer:
genetic engineering
Explanation:
does graphite have a crystal pattern
Answer:
yes
Explanation:
Graphite is a mineral composed of stacked sheets of carbon atoms with a hexagonal crystal structure.
Graphite has a crystal pattern formed by 2-dimensional sheets of trigonal sp² carbon atoms arranged in aromatic six-membered rings, leading to its unique properties of being soft and electrically conductive.
Explanation:Yes, graphite does have a crystal pattern. Graphite consists of 2-dimensional sheets of trigonal sp² carbon atoms arranged in aromatic six-membered rings, forming a hexagonal pattern. These layers are held together in parallel layers by relatively weak forces, which makes graphite soft and slippery. The distance between these layers is 3.35 Å, and all the C-C bonds within the hexagonal network measure 1.421 Å. This structural arrangement contributes to graphite's properties, such as its electrical conductivity, especially parallel to these layers. Comparatively, diamond, which is also made purely of carbon, has a different lattice structure, making it the hardest known substance, whereas graphite, with its unique layered structure, is softer.
is gas powered lawn mower a simple machine
Answer:
A gas-powered lawn mower is a complex machine because for it to function it does more than one motion. For example, it has a wheel and axle system so it can move when powered. And it has a system of simple machines and other parts that are put together to accomplish the task of cutting grass.
Explanation:
which phrase describes a population?
Answer:
https://brainly.com/question/8797229
This question says it is B and the feedback to the question i think confirms that it is B
Answer: b edge
Explanation: