The year is based off of Earth’s revolution around the sun. 1 year is equal to the amount of time that it takes for Earth to revolve once around the sun.
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➷ The correct answer would be D. Products of one process are used as some of the reactants for the other processes.
As you may know, the formula for photosynthesis is:
carbon dioxide + water ==> oxygen + glucose
And the formula for respiration is:
oxygen + glucose ==> carbon dioxide + water
The reactants for one are the products for the other and vice versa. This is why it would be the correct option.
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➶ Hope This Helps You!
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