It is predation. How?
What do you think will happen if the fox catches the rabbit.
The fox will eat it.
Thus, predator-prey relationship; the fox gets full, and the bunny, well, it's not so good.
Explanation:
I'm guessing the answer is oxygen.
The capsid surrounds the virus and is composed of a finite number of protein subunits known as capsomeres, which usually associate with, or are found close to, the virion nucleic acid
Photosynthesis, because the equation is using light energy and producing oxygen, like a plant, which use photosynthesis to make food.
