<em>the following diagram explains it clearly:
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There are fewer phytoplanktons in the mesopelagic zone because of LOWER LIGHT LEVELS. It is the area of the ocean that is just below the epipelagic zone. This area of the ocean extends from a depth of 200 to 1000 meters.
Answer: Exergonic reaction; Endergonic reaction
In coupled reactions, the energy released by an exergonic reaction is used to drive an endergonic reaction. ATP breakdown is often coupled to cellular reactions that require an input of energy.
Explanation:
Cellular reactions include Exergonic and endergonic reactions. An exergonic reaction is one that occurs spontaneously and brings about the release of energy (in form of ATP). On the other hand, an endergonic reaction proceeds only with the input of energy.
Thus, exergonic reactions are usually coupled to endergonic reactions
Parasitism.
In parasitism, one organism benefits from the relationship, but at the expense of another. When the bird has fluke worms in its intestines, the fluke worm is able to feed on the bird’s tissues, which benefits the fluke worm. However, this can infect the bird, causing it harm.
Hope this helps!
