The carbon that plants need for photosynthesis comes from (carbon dioxide gas in the atmosphere)
I believe its A. I could be incorrect though.
Is that they all have the same routine
I believe that the term metabolic rate reflects the energy the body needs to perform only its most essential activities. It is the rate of energy expenditure per unit time by endothermic animals while at rest, or the amount of energy that a person need to maintain the body functions while at rest per unit time.
