Answer: B. temporarily or permanently suspended in the flow
Explanation:
Suspended load refers to the sediments in a flowing waterbody that do not settle to the bottom but rather continually move with the motion of the water. They are therefore temporarily or permanently suspended in the flow.
They are usually made up of light and fine particles which can easily be moved such as silt and fine sands.
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.
Chronology is defined as a sequential order of events.
1- The terrestrial lithosphere is composed almost of 80% by igneous rocks, they are also known as magmatic rocks and are formed at high temperatures due to magma solidification, they come from the superior mantle and terrestrial coast. Its texture is super resistant with significant hardness to obtain minerals and other derived materials. They can be divided into extrusive and intrusive.
2- Through experiments, Bowen has defined a sequence of mineral formation when a magma begins to cool. There are two types of magmatic differentiation defined by Bowen, the continuous series and the discontinuous series. In the continuous series the internal structure of the magma is not altered and all minerals have iron and magnesium, they are formed: aluminum, silica and sodium and calcium.
In the discontinuous series decreasing the temperature reacts the previously formed mineral with the existing liquid, and thus a new mineral with different internal structure and composition is formed. They are formed: olivine, pyroxena, amphibole and biotite.
Answer:
The Amazon rainforest in Brazil lost an area about 12 times the size of New York City from August 2018 through July of this year, according to government data released Monday, which shows that deforestation in the biome has shot up significantly since the election of President Jair Bolsonaro.
The 3,769 square miles of forest cover lost during that period represents a 30 percent increase from the previous year and the highest net loss since 2008.
While there are always multiple direct and indirect drivers of deforestation, the largest contributors in Brazil, by far, are cattle ranching, demand for commodities, and logging (Butler, 2019). Cattle ranching is, as it sounds, the issue of large areas of forest being destroyed for cattle farms. This relates to the demand for commodities, as Brazil is the largest exporter of beef in the world (Yale University, 2015). The other largest commodity in the Brazilian Amazon is soybeans. In fact, Brazil is the largest exporter of soybeans in the world (Simoes et al., 2011). Soybeans require large plots of land in order to be farmed, and this land is obtained largely through deforestation. Lastly, logging, the process of obtaining wood for timber and other uses, is a very large contributor to deforestation.
Explanation:
