Respiration is the process in which organisms break down food to release
a. energy
c. sugar
b. nutrients
d. oxygen

The best answer is A.

Respiration is the biochemical process in which the cells of an organism obtain energy by combining glucose  and oxygen which results in the formation of ATP and water and release of carbon dioxide.

Respiration occurs in three stages namely:

1. Glycolysis

2. Citric acid cycle

3. Electron transport chain.

By the time these three processes are complete, at least 36  to 38 molecules of ATP will have been generated from just one molecule of glucose.

d) center of the mid-ocean ridge

give brainleysest

sinserly,

steckh986

answer: ice crystals in air

the water from the water body or another source of water gets evaporated as water vapor as an effect of heat on water. these water vapor rises in the upper layers of the earth atmosphere under high atmospheric pressure. the atmospheric pressure of these water molecules starts to decrease due to the effect of cold air. the invisible water vapor condenses into visible water droplets and ice crystals.these ice crystals and water droplets being less denser than the surrounding air floats on air as clouds.