Answer:
Option A, keystone species
Explanation:
Keystone species are responsible for controlling any species from becoming dominant over all other species. The keystone species are found at the top of all the energy pyramids and food chains.
They control the explosion of population of prey and hence regulate the overall ecological diversity.
Some common example of keystone species is as follows –
Bison, prairie dog, large mammalian predators,
Hence, option A is correct
Both internal and external factors are capable of regulating the cell cycle of a specific type of cell (Option a).
<h3>What is the cell cycle?</h3>
The cell cycle refers to the period of life of a cell from which it is generated until its division (cytokinesis).
The cell cycle of a cell is regulated by internal factors such as cyclins and kinases that phosphorylate specific proteins as well as external factors that trigger the cell division (e.g. temperature conditions).
In conclusion, both internal and external factors are capable of regulating the cell cycle of a specific type of cell (Option a).
Learn more about the cell cycle here:
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Answer: Comparing the DNA sequence of the organisms can also tell you how closely related species they are. It can give you even more information since the original DNA is how the amino acid sequence of cytochromes is coded for.
Looking at embryonic development also helps you determine the phylogeny of organisms because a way an embryo develops can be very similar to the way another species develops but then both are full-grown they look very different and its tuff to explain how close they might be related
Answer:
Food is rearranged through chemical reactions, forming new molecules that release energy as this matter moves through an organism. Molecules are broken apart and put back together to form new substances, and in this process, energy is released.
Explanation:
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Non-renewable energy<span> sources like </span>coal<span>, </span>oil<span>, </span>natural gas<span> are those sources that cannot be reproduced, are limited and </span>will<span> be expired in the The </span>use of coal<span> and other </span>fossil fuels<span> have only increased since they were discovered. Nuclear power plants produce some sort of nuclear waste </span>called<span> radioactive elements.</span>