Cellular respiration can be aerobic or anaerobic, but normally when people say cellular respiration they mean AEROBIC respiration. Aerobic means oxygen is needed while anaerobic means oxygen is not needed
I believe the answer is hormones. correct me if i'm wrong.
The phospholipid bilayer is a universal component of all cell membranes. Each phospholipid molecule has a hydrophobic(water repelling) and a hydrophilic( attracted to water) end. This allows the phospholipids to arrange themselves in a way that makes a cell membrane not able to dissolve in water. The bilayer is also semi-permeable which allows only certain molecules to enter the cell.
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This process moves carbon from biotic to abiotic matter. Carbon dioxide in the biodome decreased because decomposers decreased which means there was a decrease in cellular respiration overall.