Answer:
Plants and animals could not live without nitrogen. It is an important part of many cells and processes such as amino acids, proteins, and even our DNA. It is also needed to make chlorophyll in plants, which plants use in photosynthesis to make their food and energy
In an oligopoly type of market, there are only few producers whom dominate the market. This is the market type wherein there are only small number of firms that control the majority of the market share. The opposite to Perfect Competition, wherein there are unlimited number of producers. In an oligopoly, since there are only a few numbers competitors, each firm is likely to be aware of each other's action.
B. Ocetoclast is the answer.
Answer is: b<span>ottleneck effect.
</span>Bottleneck<span> effect is a intense reduction in the size of a </span>population due to environmental events. Tornado<span> reduce the variation in the </span>gene pool of a population, so genetic diversity remains lower and population r<span>educe its ability to adapt.</span>