Answer:
Earth is 4.5 billion years old.
Many organisms have become extinct.
Mass extinctions have occurred several times on Earth.
Explanation:
What evidence indicates that lithospheric plates move over Earth's surface?
Final answer:
Evidence for the movement of lithospheric plates includes the seismic activity along plate boundaries, volcanic activity where magma surfaces, landform changes, and geological studies of hot spots and volcanic tracks.
Explanation:
The concept of plate tectonics encompasses the movement of massive segments of the Earth's lithosphere, known as tectonic or lithospheric plates. Significant evidence indicates that these lithospheric plates move over the Earth's surface. First and foremost, the occurrence of earthquakes along plate boundaries demonstrates abrupt movements of these plates. Additionally, the presence of volcanoes along these boundaries is a result of magma surfacing through the plates, reinforcing the fact that they are actively moving.
The San Andreas Fault in California is a prime example where two plates slip past each other, causing frequent seismic activity. Another form of evidence is the creation of new landforms such as the Great Rift Valley of Africa, which is a result of diverging plates. Furthermore, the mapping of earthquake epicenters helps trace the boundaries of these moving plates, while studies of hot spots and the volcanic tracks they create offer insights into past movements of plates.
3. What sedimentary rock is made up of pieces
of shells?
6. EXPLAIN: Why does sedimentary rock form
in layers?
7. EXPLAIN: Why must water evaporate or be
pressed out for sedimentary rock to form?
Answer:
6. Because of how old the rocks are
Explanation:
6. Sedimentary rock forms in layers because of the order they were formed. The older rocks will form first and as time goes on, rock forms above it to create a new layer, and so on.
What happens when the cycling of matter in ecosystems is disrupted
Answer:
When cycling of matter in the ecosystems is disrupted, the whole ecosystem will be adversely affected. Matter includes living organisms such as plants, animals and microorganisms while non living things such water, air and nutrients etc. If plants are removed from the ecosystem system, then the whole ecosystem is destroyed because plants are the producer which make food for herbivores. These herbivores are eaten by carnivores and so on.
2. Species that evolve in different locations but similar environments can appear similar. This is known as
A)convergent evolution
B)geographic isolation
C)divergent evolution
D)continental drift
Answer:
The correct option is A.
Convergent evolution is one of the defined type of evolution and it is shown by the species belonging to different ancestors show similar characteristics due to the same residing environmental condition.
Explanation:
The creation of analogous structure takes place in the process of convergent evolution. This is illustrated by the occurrence of similar structure in two different species which were not observed in their respective ancestor. This is due to the residence of the associated species in the same environmental condition and facing the same problems of livelihood. One of the most common example is the flying ability of the insects, bats and birds.
what is the history of camera??
Answer:
begins even before the introduction of photography
Explanation:
cameras evolved from the camera obscura though many generations of photographic technology
Final answer:
The history of the camera dates back to the camera obscura utilized since the 16th century. Significant advancements occurred with Nicéphore Niépce's light-sensitive surface in the 19th century, followed by Daguerreotype and the introduction of photographic film. These innovations led to widespread accessibility of photography and the dawn of the motion-picture era.
Explanation:
History of Camera:
The history of the camera can be traced back to the camera obscura, a device used since the 16th century to project images of external scenes. The camera, derived from the Latin 'camera obscura' meaning 'dark chamber', evolved significantly with French inventor Joseph Nicéphore Niépce's creation of a light-sensitive surface in the 19th century. This discovery marked the beginning of modern photography.
Photography developed rapidly in the mid-19th century when Nicéphore Niépce successfully photographed images with a camera, but his early attempts required days of exposure. His colleague Louis Daguerre improved this process with the invention of the Daguerreotype, which significantly reduced exposure time and enhanced image clarity. The introduction of the Daguerreotype in 1839 is often regarded as the birth of practical photography.
Photographic technology advanced further when George Eastman invented photographic film in 1884. The Kodak #1 camera in 1888 and the Kodak Brownie camera by 1900 broadened photography's accessibility to a wider audience. With these developments, including motion-picture cameras and the birth of cinema, photography's impact on society and the arts has been profound and continues to evolve today.
Contaminated soil can be rehabilitated by physical remediation methods, like aeration. What is another way soil can be treated to
transform soil for future generations?
A)Plant fungi, such as mushrooms.
B)Dig up and remove the topsoil layer.
C)Flush out the contaminants with an excessive amount of water.
D)Treat the soil with an excessive amount of phosphate based fertilizer.
Answer:
C) Flush out the contaminants with an excessive amount of water.
Explanation:
Water is universal solvent. It dissolve many solutes inside it. Soil is contaminated with number of chemicals which is used by farmers for the controlling of pathogens. These chemicals remains on the soil for very long time. These chemicals are removed from the soil by applying high amount of water which flush out the chemicals from the soil.
Answer:
Contaminated soil can be rehabilitated by physical remediation methods, like aeration. What is another way soil can be treated to transform soil for future generations?
From the above analogy, another way the soil can be treated to transform soil for future use is by planting fungi such as mushrooms which helps to decompose any contaminants and digest them. This will enable the soil to be useful for future generation
Explanation:
What is causing the roots of a plant to grow downward
Answer:
Geotropism is the influence of gravity on plant growth or movement. Simply put, this means that roots grow down and stems grow up. ... In this case, the stimulus is gravity. Upward growth of plant parts, against gravity, is called negative geotropism, and downward growth of roots is called positive geotropism.
Explanation:
Red flowers (dominant) crossed with white flowers (recessive) can yield pink flowers. Pink is the heterozygous condition in a trait that shows incomplete dominance. If pink flowers are crossed with white flowers, assuming random chromosome segregation, what percentage is expected to be red flowers?
Answer:
0%
Explanation:
50% will be pink and the other 50% will be white
What do these panels do?
O
A. Capture energy from the Sun
O
B. Transform water into power
O
C Perform a nuclear reaction
O
R Burn biomass
SUBMIT
Answer:
These are solar panels, they capture energy from the sun
Explanation:
Which resource is the main source of energy in the United States?
O
A. Nuclear fuel
O
B. Geothermal
O
O
C. Hydropower
D. Fossil fuel
SUBMIT
Answer:
D
Explanation:
We use fossil fuels more than any other form.
Answer:
D. Fossil fuel
Explanation:
The formation of karst topography requires carbonic acid react with?
Answer:
limestone
Explanation:
Answer:
limestone
Explanation:
a p e x
How are dna and genes related to chromosomes?
The answer is D. Chromosomes contain genes, and genes are made of DNA
DNA consists of genes that contain instructions to build proteins and are organized into large structures called chromosomes.
DNA (deoxyribonucleic acid) is a helix-shaped molecule comprised of nucleotide base pairs that contain the genetic blueprint of an organism. It is found within structures known as chromosomes, which are made of tightly coiled DNA and proteins called histones. Genes are specific segments of DNA that carry the instructions for making proteins, which perform a vast array of functions within an organism. Each chromosome contains many genes, and these are organized in a specific sequence that is largely the same across individuals of the same species. For example, all humans have chromosomes with the same genes in the same order, although they may have different variations of those genes known as alleles.
Humans typically possess 23 pairs of chromosomes, with one set inherited from each parent. The egg and sperm cells each contribute 23 chromosomes. Chromosomes are involved in heredity, with genes being the basic units of inheritance that dictate specific traits such as eye and hair color.
The female sex cells or eggs are produced by
Answer:mieosis and the
Explanation:
Answer:
The ovaries produce the egg cells, called the ova or oocytes. The oocytes are then transported to the fallopian tube where fertilization by a sperm may occur. The fertilized egg then moves to the uterus, where the uterine lining has thickened in response to the normal hormones of the reproductive cycle.
Explanation:
3) Which of the following statements about
the tundra biome is true?
a. It is the coldest biome.
b. There are no summers.
c. It is the driest biome.
d. It is covered with trees.
Answer: A. It is the coldest biome
Explanation:
Answer:
A
Explanation:
Two different species are discovered in the rainforest and their DNA sequences
are 94% the same. What does this similarity suggest ?
The similarity of 94% in their DNA sequence suggest that they have originated from a common ancestor and are closely related species.
Explanation:
The difference in DNA sequences in different species is due to the accumulation of genetic variation in the course of natural selection and evolution. Less is the difference in DNA sequences of two organisms the more related they are.
Genes determine the characteristics in an organism, and they are DNA sequences determining the protein to be formed. The similarity in DNA sequence of two species establish the evolutionary relationship among them.
Due to the genetic variation in species, the natural selection of the species had caused the evolution of the species adapted well to the environment.
Please help with question three (it’s easy I’m just lazy lol)
Answer: 13%
Explanation: It says on the wheel, 13% on exports
What key reactant is needed to drive cellular respiration
Answer:
Glucose and Oxygen are the key reactant that is needed to drive cellular respiration. Respiration is a energy releasing process in which energy is released due to the breakdown of glucose molecules with the help of oxygen which produces carbondioxide, water and energy in the form of Adenine tri phosphate (ATP). Carbondioxode is a waste product which is removed from the cell and ATP is used by the cell for performing different functions.
What is the difference between chromatin and chromosomes?
Answer:
The main difference between chromatin and chromosome is that chromatin consists of the unravelled condensed structure of DNA for the purpose of packaging into the nucleus whereas chromosome consists of the highest condensed structure of the DNA doublehelix for the proper separation of the genetic material between daughter cells.
Chromatin is the combination of DNA and proteins that make up chromosomes. Chromosomes are condensed during cell division but exist as less condensed chromatin when the cell is not dividing.
To understand chromatin, it is helpful to first consider chromosomes. Chromosomes are structures within the nucleus that are made up of DNA, the hereditary material, and proteins. This combination of DNA and proteins is called chromatin. In eukaryotes, chromosomes are linear structures. For example, in humans, the chromosome number is 46, whereas in fruit flies, the chromosome number is eight.
When a cell is not dividing, the chromosomes are in a less condensed, thread-like form known as chromatin. During cell division, chromatin condenses to form distinct chromosomes that are visible under a microscope. Therefore, chromatin describes the material that makes up chromosomes both when they are condensed and decondensed.
An astronomer sees bands of different
colors from objects in space using this tool
Answer:
spectroscope
Explanation:
What is an electron?
A. Where protons and neutrons are
found
B. The smallest part of an atom
C. A part of an atom that is positively
charged
D. The heaviest particle in an atom.
Answer: B. The smallest part of an atom
Explanation:
Electrons are the smallest of the three particles that make up atoms. Electrons are found in shells or orbitals that surround the nucleus of an atom. Protons and neutrons are found in the nucleus. They group together in the center of the atom.
"The energy necessary to perform this function comes directly from the
(1)exchange of H2O and O2 during respiration
(2)blood flowing through the organs
(3)ATP molecules produced during cellular respiration
(4)water that is eliminated by the organs"
The energy needed for biological functions comes from ATP molecules produced during cellular respiration (Option 3), involving the digestive, cardiovascular, and respiratory systems.
Explanation:The energy necessary to perform functions in living organisms mainly comes from ATP (adenosine triphosphate) molecules produced during cellular respiration (Option 3). Cellular respiration is an intracellular process that converts glucose and oxygen into carbon dioxide, water, and most importantly, ATP. This process requires the involvement of the digestive, cardiovascular, and respiratory systems. Digestion breaks down food to obtain glucose, while the respiratory system facilitates the exchange of gases, providing oxygen to the body and expelling carbon dioxide. ATP then is used as the main energy source for various biological processes.
What level of organization is represented by each
image?
A is cell, B is organ, and c is tissue.
If this is wrong please tell me and I'll see if I can figure out what I did wrong.
Answer:
A-Cell
B-organ
C-tissue
these are the correct answers.
Explanation:
Name two ways DNA and RNA are similar
Answer: Both DNA and RNA have four nitrogenous bases each—three of which they share (Cytosine, Adenine, and Guanine) and one that differs between the two (RNA has Uracil while DNA has Thymine). ... One of the most significant similarities between DNA and RNA is that they both have a phosphate backbone to which the bases attach.
Explanation:
Hope i could help please give brainliest i would apreciate it!
Answer: They both have suga-phosphate backbone. They are made up of monomers called nucleotides.
Explanation: Nucleotides are monomeric units of nucleic acids. Nucleotides are made up of three parts: the pentose (5-carbon) sugar, a phosphate group and a nitrogenous bases. Both DNA and RNA have four nitrogenous bases but the only difference is that DNA contains Thymine while RNA contains Uracil. They both have adenine, cytosine and guanine in common. The sugar-phosphate backbone forms the rail of both DNA and RNA, each having a pentose-phosphate group but the difference is that DNA contains deoxyribose while RNA contains ribose sugar.
Write notes on the accesary organs of digestion found in the mouth and their function and structure
Answer:
Write notes on the accesary organs of digestion found in the mouth and their function and structure?
Digestion begins in the mouth as mastication starts while chewing the food material, when food materials are masticated digestion begins as enzyme starts acting on food materials right from the mouth which aids digestion
Explanation:
two of the four are biomolecules are proteins and nucleic acids. what is the relationship between proteins and nucleic acids?
Answer: The translation of sequences. (DNA/RNA)
The relationship between proteins and nucleic acids is nucleic acids contain the information to make proteins.
What are Organic compounds?Organic compounds are known as the compounds that have carbon-hydrogen bonds.It should be noted that nucleic acids are the chemical compounds that serve as the information carrying molecules that are in cells. The relationship between proteins and nucleic acids is that the nucleic acids contain the information to make proteins.
Nucleic acids combine to synthesize proteins, from DNA which becomes RNA and when entering the ribosome generates such synthesis.Protein synthesis is a complex process that begins in the cell nucleus and begins when the protein gene is encoded and expressed by the transcription process. The transcript is the one that transmits the information from the DNA to the RNA (the two nucleic acids).
Therefore, The relationship between proteins and nucleic acids is nucleic acids contain the information to make proteins.
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In order for plants and animals to be able to use nitrogen, N2 gas must first be converted to more a chemically available form. Review the picture of the nitrogen cycle. One type of organism is responsible for "fixing" nitrogen so other organisms can use the element. What organism is this?
Answer:
Nitrogen fixing bacteria is the organism which is responsible for the fixing of atmospheric nitrogen into usable form for the plant.
Explanation:
Nitrogen fixing bacteria is a type of bacteria which fixes atmospheric nitrogen into ammonium and nitrates form. Plants are unable to take atmospheric nitrogen so it must be converted into available form i. e. nitrates and ammonium. Examples of nitrogen fixing bacteria are Cyanobacteria and Azotobactor etc. These nitrogen fixing bacteria lives in the root of the plant and makes symbiotic association.
Answer:
oxygen
Explanation:
When a mustard plant seedling is transferred to an environment with higher levels of carbon dioxide, the new leaves have a lower stomata-to-surface-area ratio than do the seedling’s original leaves.
Which of the following best explains how the leaves from the same plant can have different stomatal densities when exposed to an elevated carbon dioxide level?
Answer:
When higher levels of carbon dioxide is present in the environment and a mustard plant seedling is transferred to an environment, the new leaves have a lower stomata-to-surface-area ratio, it is because the concentration of carbondioxide is high in the surrounding so the plant produce small leaves having less number of stomata. If the concentration of carbondioxide is lower so big leaves are produced having maximum number of stomata.
The diagnostic test for HIV, the virus that causes AIDS, involves testing the blood for antibodies with this pathogen. Antibodies are produced when the body…
Stimulates enzyme production
detects foreign antigens
secretes specific hormones
synthesizes microbes
Answer:
Detects foreign antigens
Explanation:
Antibodies are the defense cells of the body. They are produced by the white blood cells and help in fighting and killing foreign bodies which are known as antigens. The antibodies attacks the antigens by binding onto it and releasing chemicals to kill it or by engulfing the foreign body( antigen).Examples of antibodies are IgA and IgG.
What happens when a population reaches its carrying capacity?
Diversity Increases.
New Individuals will immigrate.
Organisms form random distribution patterns.
The ecosystem cannot support more growth.
Answer:
The ecosystem cannot support more growth.
Explanation:
The ecosystem is at its maximum capacity, like how many people you can fit in a room. If there’s too many people then everyone would suffocate. Just like if there is too many organisms, the food, or water, would run out and they would starve, or die of thirst.
Enzymes are sensitive to pH and temperature. If an enzymes environment is too hot, the enzyme cannot
Enzymes function best at specific temperatures and pH levels. Excessively hot temperatures cause enzymes to lose their shape in a process called denaturation, which inhibits their ability to function.
Explanation:Enzymes are biological catalysts that accelerate chemical reactions in cells. They function optimally at specific temperatures and pH levels. If an enzyme's environment is too hot, it undergoes a process called denaturation where the enzyme loses its specific shape, making it unable to bind with its substrate and carry out its function effectively.
This change is generally irreversible, and the disrupted enzymatic activity can affect metabolic processes in the organism. Thus, both temperature and pH are critical factors in enzyme functionality.
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If an enzyme's environment is too hot, the enzyme cannot effectively bind to substrates because high temperatures cause the enzyme to denature, which is a loss of its three-dimensional structure and function.
Enzymes are sensitive to pH and temperature, which affect their ability to function properly. When the environment of an enzyme is too hot, the enzyme cannot maintain its shape and, as a result, it cannot bind to substrates effectively. Increase in temperature, beyond a certain point, leads to a loss of the three-dimensional structure of the enzyme, a process known as denaturation. This structural change is typically irreversible and results in the loss of enzymatic activity because the active sites are no longer suited to bind to substrates. Additionally, enzymes have an optimal pH range and deviations from this range can also result in denaturation.