Question

Which statement describes the roles of photosynthesis and respiration in the oxygen cycle?

Photosynthesis and respiration both put oxygen into the atmosphere.

Photosynthesis removes oxygen from the atmosphere, and respiration puts oxygen into the atmosphere.

Respiration and photosynthesis both remove oxygen from the atmosphere.

Respiration removes oxygen from the atmosphere, and photosynthesis puts oxygen into the atmosphere.

Answer 1

Respiration and photosynthesis both remove oxygen from the atmosphere

Answer 2

Respiration removes oxygen from the atmosphere, and photosynthesis puts oxygen into the atmosphere.