Question

which of the following best describes respiration?
intake of oxygen to convert glucose to energy
release of water vapor
splitting of atmospheric nitrogen atoms to bond with oxygen
absorption of light by chlorophyll

Explanation:

Respiration is a biological process where organisms take in oxygen and use it to break - down glucose to release energy. The release of water vapor is related to transpiration in plants or evaporation in general. Splitting of atmospheric nitrogen atoms to bond with oxygen is part of nitrogen - fixing processes. Absorption of light by chlorophyll is related to photosynthesis.

Answer:

Intake of oxygen to convert glucose to energy