Question

why energy is required​

Answer 1

The petrol is in a stable state and does nothing, but give it enough energy (heat) and some molecules will react with the oxygen in the air. ... Because without energy input from outside, in low entropy form, organisms cannot get rid of the entropy generated by the normal chemical processes of life.

Answer 2

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In summary, all living organisms require energy for both survival and reproduction. ... The sun provides the energy for photosynthesis. Cells, in turn, utilize sugar as a source of energy. Cellular respiration is the synthesis of ATP using energy released by the breakdown of sugar to carbon dioxide and water.