Question

phosphorus cycle
pollution basins rocks and minerals waste dna overgrowth plants

1. phosphorus in not found in the free state in nature, but is contained mostly in
2. it is an essential nutrient for life, as it makes up important chemicals such as
3. in the phosphorus cycle, phosphorus moves between the soil and , which are eaten by animals. the animals use phosphorus, and then their products help return the sulfur for the next generation of phosphorus in the soil.
4. some of the phosphorus in soils can be washed away into water
5. another source of phosphorus in water comes from man - made
6. too much phosphorus in water leads to plant , strangling all other life forms in the water.
7. why is the use of too much phosphorus - rich fertilizers bad for the environment?

Explanation:

1. Phosphorus is mainly in rocks and minerals.
2. It is in important chemicals like DNA.
3. Phosphorus moves between soil and plants, and animal waste returns it to soil.
4. Soil - phosphorus can go to water basins.
5. Man - made pollution is a water - phosphorus source.
6. Excess water - phosphorus causes plant overgrowth.
7. Excess phosphorus - rich fertilizers cause overgrowth in water bodies, harming other life forms.

Answer:

1. rocks and minerals
2. DNA
3. plants; waste
4. basins
5. pollution
6. overgrowth
7. It can cause excessive plant overgrowth in water bodies, which strangles other life forms in the water.