Question

______ is the process in plants which replenishes the atmospheric oxygen.

Answer 1

Photosynthesis is the process in plants which replenishes the atmospheric oxygen.

Explanation:

During photosynthesis, green plants absorb carbon dioxide and water from the environment to synthesise food in the presence of sunlight. As a direct result of this chemical process, water molecules are split apart in a reaction called photolysis, which releases molecular oxygen gas into the air as a byproduct. This continuous release acts as the primary natural mechanism on Earth that replenishes atmospheric oxygen for all aerobic organisms.