Answer:
This is the best explanation for why there is such a small amount of phosphorus that moves into aquatic systems:
1. Phosphorus is highly stable in the atmosphere and remains there for long periods of time.
Explanation:
The phosphorus first cycle is the process by which the phosphate ion passes in very small amounts through the lithosphere from volcanic aeorosols, then to the hydrosphere, where it stays from 20,000 to 100,000 years in the ocean, and finally to biospherere, where rain and erosion helps washing the phosphorus from the rocks into the soil. So, raining is the beginning of the phosphorus´s second cycle, so it is also, the slowest one of the matter cycles that is why the natural total background phosphate levels in several bodies of freshwater range from 0.005 to 0.05 mg/L. Phosphorus remains mostly on land and in rock and soil minerals.
Although abundant on our planet´s sedimentary rock crust and in human body, phosphorus to commercialize is only found in minerals therefore, phosphates mining activity and calcium heating is the only way to get it in its pure elemental form. It is an essential nutrient for plants and animals and a big percentage of the mined phosphorus is used to make fertilizers.
Question Options:
A. the creation of a new nation
B. the creation of a new state
C. a drastic boundary change
D. a small boundary change
Answer: He is witnessing a small Boundary Change.
A boundary change in geography is a change in a real or imaginary line or location.
The River was flowing towards the United States initially then changed towards Mexico. This is classified as a small change because he was tracking only a particular area of the
river.
Indianapolis
evansville
Fort wayne
southbend
bloomington
<span>The year with out a summer happened during 1816 when weather in Europe and North America took a bizarre turn that resulted in widespread crop failures and even famine. Cold temperatures returned. The lack of sunlight became so severe that farmers lost their crops and food shortages were reported in Ireland, France, England, and the United States.
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Answer:
The data collected by the census determine the number of seats each state has in the U.S. House of Representatives (a process called apportionment) and is also used to distribute billions in federal funds to local communities.
Explanation:
