Question

why is photosynthesis necessary for the survival of all living organisms?​

Answer 1

Answer:

Photosynthesis is important to living organisms because it is the number one source of oxygen in the atmosphere. Without photosynthesis, the carbon cycle could not occur, oxygen-requiring life would not survive and plants would die. ... Without photosynthesis there would be little to no oxygen on the planet.

Answer 2

only with photosyntesis plants produce oxygen and food.

and both these are essential for the survival or organisms. plants use CO2 for the process, so there will be a balance in amount of CO2. increase in CO2 will lead to global warming causing harm to the living organisms