If one species in the food web ceases to exist, one or more members in the rest of the chain could cease to exist too. A plant or animal doesn't even have to become extinct to affect one of its predators.
The conversion of adenosine diphosphate (ADP) to adenosine triphosphate (ATP) is a key reaction in organisms because it allows for later use of ATP as a source of energy.
They are rare, but can significantly increase genetic diversity when reproductive rates are high<span>
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