Oxygen Cycle

Stage 2

All aerobic organisms use free oxygen for respiration

Stage 1

All green plants during the process of photosynthesis , resales oxygen back into the atmosphere as a by-product

Stage 3

Animals exhale CO2 back into the atmosphere which is agiain used by plants during the photosynthesis. Now O2 is balanced in the atmosphere.

oxygen cycle

Cycle whereby natural processes and human activity consume atmospheric oxygen and produce carbon dioxide and the Earth's forests and other flora, through photosynthesis, consume carbon dioxide and produce oxygen.

What happens to phosphorous when that is carried by runoff into oceans?

It forms into sediment and turns to rocks.

What happens to phosphorus that erodes in rock and soil?

It is absorbed by plants.

Absorption by Plants and Animals

Once in the soil, plants absorb the phosphorous. Animals eat the plants to get phosphorous

What happens to phosphates when plants and animals die

Phosphates return to the water and the plants that line the lake and absorb it and it enters the cycle again

The phosphorous cycle differences

Phosphorous stays physical the enire cycle where ware, nitrogen, and O2 all change forms.

Why is phosphorus an important biological molecule?

Phosphorus makes up adenosine triphosphate (ATP) and Nicotinamide adenine dinucleotide phosphate (NADP) which are used in important cellular processes such as photosynthesis.

Decomposition

Returns to the soil via decomposition of plants and animals.

Weathering of rocks

Rocks are broken down exposing phosphorus

phosphorus cycle

The movement of phosphorus atoms from rocks through the biosphere and hydrosphere and back to rocks.