Question

In which process is the atmospheric oxygen used?
(A) Respiration
(B) Combustion
(C) Formation of nitrogen oxide
(D) All the given​

Answer 1

Answer:

Oxygen plays a critical role in respiration, the energy-producing chemistry that drives the metabolisms of most living things. We humans, along with many other creatures, need oxygen in the air we breathe to stay alive. Oxygen is generated during photosynthesis by plants and many types of microbes.

Answer 2

Answer:

all of the above

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