AP BIOLOGY

Detailed explanation-1: -Photosynthesis is the process that replaces oxygen in the atmosphere. In this process, plants make their own food and oxygen is produced along with it.

Detailed explanation-2: -Photosynthesis: The oxygen is returned to the atmosphere through photosynthesis by plants. During photosynthesis, the carbon dioxide, and water are used by plants to form food along with the release of oxygen. The process of fixing atmospheric carbon by trapping the sun’s energy in biological form.

Detailed explanation-3: -Plants use photosynthesis to capture carbon dioxide and then release half of it into the atmosphere through respiration. Plants also release oxygen into the atmosphere through photosynthesis.

Detailed explanation-4: -In the light-dependent reactions, which take place at the thylakoid membrane, chlorophyll absorbs energy from sunlight and then converts it into chemical energy with the use of water. The light-dependent reactions release oxygen from the hydrolysis of water as a byproduct.