Answer:
Photosynthesis
Explanation:
In photosynthesis, carbon reduction helps make glucose, the oxygen is formed with the reduction of water in the photosystems 2 and 1.
In cellular respiration, both of these compounds would be reactants.
The time period was called the Hadean Eon, and the rocks themselves are nearly 4.4 billion years old
Respiration is a vital process for both plants and animal because through this process, oxygen is inhaled. ... Plants and animals need continuous supply of energy to perform the vital functions necessary for their survival. So, respiration is a continuous process which make an organism able to meet its energy demand.
https://www.meritnation.com/ask-answer/question/respiration-is-a-vital-process-explain/life-processes/9208881
