Which of the following statements about the phosphorus cycle is true
The biogeochemical cycle that explains the movement of phosphorus through the lithosphere, hydrosphere, and biosphere is known as the phosphorus cycle. The atmosphere plays no part in the transport of phosphorus, unlike many other biogeochemical processes, since phosphorus and phosphorus-based compounds are typically solids at the temperatures and pressures found on Earth. Only advanced, local conditions allow for the development of phosphine gas. As a result, the phosphorus cycle should be viewed from the perspective of the entire Earth system before focusing on the cycle in terrestrial and aquatic systems.
Since phosphorus is steadily lost in runoff, it becomes less available to plants on land over thousands of years. Plant growth is slowed and soil microbial growth is slowed in low-phosphorus soils, according to studies of soil microbial biomass. In the biogeochemical cycle, soil microorganisms function as both sinks and sources of available phosphorus. 1st Chemical, biological, and microbiological transformations of phosphorus occur in the short term. However, tectonic movement over geologic period drives the big transfer in the long-term global cycle. [two]
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Both living processes include hydrogen and oxygen, which are found in water. The hydrosphere is the portion of the Earth’s surface where water flows and is collected. Water can be found in liquid or solid form on or under the surface in rivers, lakes, oceans, groundwater, polar ice caps, and glaciers. And it exists in the form of water vapor in the atmosphere. Carbon is a central component of fossil fuels and can be present in all organic macromolecules. Nitrogen is an essential component of our nucleic acids and proteins, as well as a key component of human agriculture. Phosphorus, a major component of nucleic acid (along with nitrogen), is one of the key ingredients in artificial fertilizers used in agriculture, and its environmental effects on our surface water are well documented. Sulfur is needed for protein 3-D folding, such as disulfide binding.
These elements’ cycling is interconnected. The flow of water, for example, is important for nitrogen and phosphate leaching into rivers, lakes, and oceans. Furthermore, the ocean acts as a large carbon storage site. Mineral nutrients are thus cycled through the entire biosphere, from one living organism to the next, and between the biotic and abiotic worlds, either quickly or slowly.
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Nutrients are any chemicals that are necessary for organisms to work properly. There are two types of nutrients: (1) inorganic chemicals necessary for photosynthesis and metabolism by autotrophic organisms, and (2) organic compounds consumed as food by heterotrophic organisms. The inorganic nutrients are discussed in this chapter.
Plants absorb a variety of inorganic nutrients from their surroundings, usually in the form of simple compounds. Most plants, for example, get their carbon from the atmosphere as gaseous carbon dioxide (CO2), their nitrogen as ions (charged molecules) nitrate (NO3–) or ammonium (NH4+), their phosphorus as phosphate (PO43–), and their calcium and magnesium as simple ions (Ca2+ and Mg2+), and their calcium and magnesium as simple ions (Ca2+ and Mg2+). The ions are dissolved in soil water and are absorbed by plant roots. Plants produce all of the biochemicals they use for growth and reproduction using these different nutrients in photosynthesis and other metabolic processes.
The availability of nutrients also limits the productivity of a natural ecosystem. This can be explored by adding fertilizer to the method in an experimental environment. In this scenario, nitrogen fertilizer was applied to a meadow on Ellesmere Island’s Arctic tundra, which resulted in improved productivity. The experimental plot is a deeper shade of blue. B. Freedman is the author of this article.
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Explanation: In ecosystems, phosphorus is contained in the form of phosphate, which is bound to oxygen. Rainwater dissolves phosphate when phosphate-rich rocks are exposed and eroded. Dissolved phosphate is absorbed by plants from their roots. Animals consume the plants, and decomposers return the phosphorus that remains in the bodies to the soil and water after they die. It could then be inserted back into the rock.
Explanation: All of the other cycles’ systems have at least one atmospheric component. Carbon dioxide is used in the photosynthesis part of the carbon cycle. When gaseous sulfur dioxide is released by volcanic eruptions, it enters the sulfur cycle. The condensation of clouds in the atmosphere, as well as the accumulation of those clouds, are all part of the water cycle. Until it is fixed by cyanobacteria, atmospheric nitrogen gas is introduced into the nitrogen cycle. Only in the phosphorus cycle does the atmosphere lack a phosphorus-containing compound that is required for life on Earth.