Question

It is not just the exchange of gases. It is the process of breaking down of

complex food molecules to produce chemical or potential energy.

What does ‘It’ refers in the above statement​

Answer 1

Answer:

Respiration is referred here.

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Answer 2

Explanation:

All living organisms need energy to grow and reproduce, maintain their structures, and respond to their environments; metabolism is the set of the processes that makes energy available for cellular processes.

Metabolism is a combination of chemical reactions that are spontaneous and release energy and chemical reactions that are non-spontaneous and require energy in order to proceed.

Living organisms must take in energy via food, nutrients, or sunlight in order to