23 4 5 6 7 8 9 10 time remaining 18: 25 which is an example of why the process of photosynthesis is important to life on earth?

Photosynthesis is a process found only in plants, not in animals: so we can only consider the first and the last question. 

It uses carbon dioxide and produces oxygen; so the last option is false. 

The correct answer is: A) Grass uses photosynthesis to produce glucose, which is used within the grass for growth.

Plants use it to produce oxygen, which we breath.
so no plants- no oxygen- we die.