Which of the following statement best describes the net energy flow in the biosp

Question

Which of the following statement best describes the net energy flow in the biosphere? A living organism is a system in which, overall, free energy is conserved. An individual organism may consume more free energy than it releases, but overall, the net free energy consumption of the biosphere is zero. Overall, living organisms consume free energy. Therefore, the biosphere requires a constant source of free energy. This free energy comes mainly from within the earth itself. Overall, living organisms consume free energy. Therefore, the biosphere requires a constant source of free energy. This free energy comes mainly from outside the earth.

Explanation / Answer

1. Option D

Living organisms can use energy in two forms radiant and fixed energy. Radiant energy is in the form of electromagnetic waves, such as light. Fixed energy is potential chemical energy bound in various organic substances which can be broken down in order to release their energy content.

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