The correct answer is - biomass from the decomposing grasses.
The Midwest is a region known for its highly fertile soil. The reason for this is that the weathered bedrock combines with huge amounts of biomass. The biomass is almost entirely form the grasses. The grasses grow naturally in this region and they dominate the landscape. They grow and die out relatively quickly, as most of those grasses are one season grasses. They manage to create very large amounts of biomass every year, and also they decompose very quickly. The grasses also are high in nutrients, so once decomposed, they give the soil a lot of nutrients as well, which makes it very fertile and suitable for agriculture.
<span>Trophic levels refer to where organisms fall on the food chain. Fish from higher trophic levels are often larger and have a higher dollar value at market, resulting in overfishing and the depletion of those species from the wild. If those fish are continued to be consumed at a high level, the loss of predators at the top of the food chain could throw off the balance in the ecosystem.</span>
Hello.
The answer is: B. Subtract the death rate from the birthrate.
The rate of natural increase is given as a percentage, calculated by dividing the natural increase by 10.
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Answer:
Because the gravity of the Earth is pulling on air molecules and pressing it against the ground, our atmosphere is thinner and thinner the higher up you go.
Explanation:
Earth is a planet that has an active core, thus it has a reasonably strong gravitational pull. Gravity manages to keep all things on the surface of our planet and the ones that are in the atmosphere to pull them down or keep them near. This affects the atmosphere as well.
The atmosphere is composed of gases, all of which are made out of atoms and molecules. They are very light, so Earth is pulling them towards it. This has resulted in a situation where the majority of the gases are close to the surface, in the lowest parts of the atmosphere, and as we go up there is less and less of them, so the atmosphere is thinner and thinner as the elevation increases.
Answer:
(-5,-2)
Explanation:
mid point of AB = (-1,-5)
A = (3,-8)
difference between 3 and -1 is 4 so take 4 from -1 = -5
difference between -8 and -5 is 3 so add 3 to -5 = -2
