In the oxygen–carbon dioxide cycle,

a.

animals produce oxygen used by plants for photosynthesis.

b.

animals produce oxygen used by plants for respiration.

c.

animals produce carbon dioxide used by plants for photosynthesis.

d.

animals produce carbon dioxide used by plants for respiration.

C is the correct option

C is the correct option

c.  animals produce carbon dioxide used by plants for photosynthesis.

Explanation:

Photosynthesis is responsible for producing and maintaining the oxygen content in the atmosphere, and that supplies all of the organic matter and most of the life system on earth. Earth animals and other organisms thus inhale this and give out carbon and hence are called as the consumers or primary consumer while the pants are called as producers as they can transform the contents when reacting in sunlight.

c.  animals produce carbon dioxide used by plants for photosynthesis.

Explanation:

Photosynthesis is responsible for producing and maintaining the oxygen content in the atmosphere, and that supplies all of the organic matter and most of the life system on earth. Earth animals and other organisms thus inhale this and give out carbon and hence are called as the consumers or primary consumer while the pants are called as producers as they can transform the contents when reacting in sunlight.

Ithink the correct answer is a