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alexgriva [62]
4 years ago
9

What human activities lead to soil erosion?

Biology
1 answer:
galina1969 [7]4 years ago
3 0

Answer:

Soil erosion occurs naturally by wind or harsh climatic conditions but human activities include overgrazing, overcropping and deforestation.

Explanation:

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50 POINTS How does biodiversity help ecosystems survive disease,predation,and invasion?
Oksi-84 [34.3K]

Biodiversity ensures that there is a wide range genetic variations in certain species and many different species in an ecosystem. If an epidemic breaks out in a ecosystem if one species has some organisms that are immune to that disease they will survive and pass on the gene that makes them immune. If one species completely dies out in that ecosystem another species may be able to take over its role in the ecosystem so the whole ecosystem does not die out. If a certain species has a characteristic that helps them blend in with their environment and protects them from their predators those members of the species will survive and pass on their genes to later members of their species. If a invasive species is introduced it would be helpful if their was an animal in that ecosystem that could help regulate the invasive species population however what is most likely to happen is that due to the high stability of the ecosystem due to a high biodiversity the ecosystem will have a better chance of surviving because their will be different sources of food in the environment so the invasive species and the native species wouldn't have to compete too much for food.

3 0
3 years ago
A food chain consists of phytoplankton, zooplankton, shrimp, and herring. If the bacteria produces 173,000 kJm-2 year-1 of energ
dangina [55]

Answer:

The trophic efficiency between the primary and the secondary produces is 18.064 %

Explanation:

The trophic efficiency is the ratio or the fraction obtained by dividing the energy used for growth at a trophc level by the level of energy supplied at the the next lower trophic level.

The given parameters are;

The energy produced by the bacteria (primary consumer) = 173,000 kJ/(m²/y)

The energy contained in the plankton = 28,000 kJ/(m²/y)

The energy contained in the shrimp = 3,100 kJ/(m²/y)

The energy contained in the herring = 150 kJ/(m²/y)

Therefore, we have;

Energy supplied at the primary trophic level = 173,000 kJ/(m²/y)

The energy used for growth (contained) in the secondary trophic level (secondary consumer)  = 28,000 + 3,100 + 150 =  31,250 kJ/(m²/y)

Trophic \ efficiency = \dfrac{Energy \ used \ for\ growth\ (Secondary\  consumer)  }{ Energy \ Supplied \ (Primary \  consumer) } \times 100

Trophic \ efficiency = \dfrac{31,250}{ 173,000} \times 100 =  18.064 \ \%

8 0
4 years ago
Which of these would be considered a "basic" science?
Ksju [112]

Answer:

<h3>tapon mo module mo para wla kanag module. </h3>
5 0
3 years ago
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What are the monomers for each of the 4 biomolecules?
Elena L [17]

Answer:

protiens: amino acids

lipids: fatty acid and glycerol

carbohydrates: monosaccharides

nucleic acid: nucleotides

Explanation:

7 0
2 years ago
The term wireless refers to a variety of technologies and devices, such as smartphones, computers, printers, headphones, and spe
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microwaves wouldn't make sense with the next word in the question, and mechanical wouldn't make sense.
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