Respiration releases carbon dioxide into the atmosphere.

Only animals perform respiration; plants do not.

During respiration, glucose is broken down to produce energy.

Respiration removes carbon from the atmosphere.

Carbon dioxide produced by respiration can be used by plants in photosynthesis.

Respiration uses up oxygen and releases carbon dioxide.

The oxygen cycle depends on both respiration and photosynthesis.

Respiration produces oxygen for the atmosphere.

Without respiration, oxygen levels in the air would increase too much.

Plants perform respiration only at night.

Water is produced during cellular respiration.

Respiration helps return water vapor to the atmosphere.

Only plants release water through respiration.

The water released during respiration can become part of the water cycle through evaporation.

Respiration has no connection to the water cycle.