Definition: these are the components of the reservoirs of oxygen that are exchanged in our environment.

Oxygen Cycle

Explanation:

The oxygen cycle can be considered the set of components of the oxygen reservoirs that are exchanged in our environment and guarantee the circulation of oxygen on the planet. Oxygen is extremely important, because without it, cellular respiration does not occur and its lack would be the main cause of death for most living beings.

The oxygen cycle allows oxygen to be used by living beings, recycled and returned to nature where it can be used again.

the answer is: they occur when the sun, moon, and earth are aligned. in spite of their name, these tides occur twice a year in the spring and fall.

the element that provides strength to the exoskeletons of clams and oysters is phosphorus. this is so because calcium carbonate is the main component in the shells.

explanation: