The need for energy, gained by respiration and photosynthesis, is the driving force of the oxygen cycle.
a. true
b. false

What evidence supports the law of conservation of energy? a) mechanical energy is converted to chemical energy during photosynthesis. b) oxygen is made from the breakdown of carbon dioxide during photosynthesis. c)energy is absorbed by chlorophyll and becomes chemical energy during photosynthesis. d)the sun gives off light energy that is absorbed by plants.

How is the carbon cycle related to global warming ?

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