Question

How do humans affect the Phosphorus cycle?

Answer 1

Hint: The cycle of phosphorus is the biogeochemical cycle that depicts the movement through the lithosphere, hydrosphere, and biosphere of phosphorus.

Complete answer:
The atmosphere has no significant role in the phosphorus cycle. Phosphorous remains locked in the land and water that is available to plants very slowly. For plants, it is thus a limiting nutrient. The phosphorus cycle has been greatly influenced by humans. They mined it, converted it into fertilizer, and transported it all over the world. These activities have resulted in run-offs from farm water to pools and lakes that then become rich in phosphorus.

1)A primary way humans affect the phosphorus cycle is by using synthetic fertilizers. The phosphate in the fertilizer is not completely used by plants and leftover phosphates remain in the water supply of the plants as a result. The residual phosphate leaves as a run-off of water.
2)Another way that we adversely affect the phosphorus cycle is the abuse of animal waste fertilizers. If animal waste or manure is spread carelessly during the winter, plants may not use it. Then the ice can thaw during the spring and the phosphates can turn into run-off.
3)Municipal sewage plants also supply the water with phosphates. The phosphates in our waste will not be eliminated if not treated and will remain in our water supply.

Hence, the correct answer is option ()

Note: 1)Phosphorus is an important element for the growth of plants and animals.
2)It increases the biological productivity of surface waters.
3)It forms an important framework of DNA and RNA.