This biology question covers important biological concepts and processes. The step-by-step explanation below helps you understand the underlying mechanisms and reasoning.

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a. The process that gives off carbon dioxide into the air is respiration. b. The process that uses up carbon dioxide in the air is photosynthesis.
a. The process that uses up oxygen in the air is respiration. b. The process that gives off oxygen into the air is photosynthesis.
To increase the amount of oxygen in the air, we can plant more trees and other plants.
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Welcome back Lihle — been a while! Let's pick up where you left off. 1.
This biology question covers important biological concepts and processes. The step-by-step explanation below helps you understand the underlying mechanisms and reasoning.