Question

What would happen to most of life on earth if photosynthesis stopped​

Answer 1

That's because for photosynthesis to cease to exist, Earth would have to plunge into darkness. ... Whether the culprit were too much sunlight or not enough, if photosynthesis stopped, plants would stop converting carbon dioxide -- an air pollutant -- to organic material.

Step-by-step explanation:

Answer 2

If photosynthesis stopped, most living organisms on Planet Earth, including humans, would die due either (A) to a shortage of energy because no food molecules would be available or (B) to a shortage of oxygen for cellular respiration.