What would happen without photosynthesis?

Answer 1

If light was to suddenly stop, photosynthesis would stop. The driving energy behind photosynthesis is chemical energy which is created directly from sunlight. Without photosynthesis a build up of carbon would occur and humans and animals would come to and end.

Answer 2

Then autotrophic species would not be able to survive. There would be a collapse in the food chain of every habitat and a possible mass extinction.

Another possibility is that plants would have evolved to do chemosynthesis, another autotrophic strategy that is used by plants in the deep ocean where light is not available.

Answer 3

The vast majority of life (99.999%) would die. Anything that relies on plants or algae to survive would succumb. Some lifeforms that relies on alternative means of survival, such as bacteria living around deep sea thermal vents, would continue to live and may even thrive as competing organisms are eliminated. However, all 'macrolife', including humans and plants, would die.

Answer 4

you will have bad moliqules flying around and it wont be a fresh environment

Answer 5

the plant would not survive so the leaf would die

Answer 6

In the absence of photosynthesis, we would not get oxygen

Answer 7

they woudent carry out oxygen