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jek_recluse [69]
3 years ago
9

What are two ways in which the value of soil can be reduced?

Biology
1 answer:
Dovator [93]3 years ago
6 0

Fertile soil is valuable because there is a limited supply. Less than one eighth of land on Earth has soil that are well suited for farming.

The thick, fertile soil of the prairies took many thousands of years to develop.

The two ways that the value of soil can be reduced is help use soil correctly, peanuts were once a corp to help soil, and still can be. The soil value recycle rocks and bedrock.

The value of soil is reduced when it loses its fertility and when topsoil is lost due to erosion. Soil can be conserved through contour plowing, conservation plowing and crop rotation. The thick mass of tough roots at the surface of the soil.

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ExtremeBDS [4]
Every cell of the organism has the same DNA sequence and same genes. However, not all genes are expressed in every single cell at the same time. Only those genes necessary for a specialised function of a specialised cell are expressed in the specialised cell. For example, skin cells have some different proteins than nerve cells. Genes responsible for those "skin proteins" are activated in skin cells and are turned off in nerve cells.
3 0
4 years ago
The alleles for height are labeled T for tall and t for short. If the resulting plant is tt, it will be _____. Question 11 optio
lesya692 [45]
B) short because it has both t alleles and no T alleles
5 0
3 years ago
b. In 1979, the estimated elephant population was 1.3 million and in 2007 it was 640,000. By approximately what percentage did t
saveliy_v [14]

Answer:

The initial amount, 1.3 million = 1,300,000 is the 100%.

now, 640,000 is a given percentage (lower than 100%) of that.

How we can find it?

suppose that 640,000 represents an x%.

Then we have that the quotient between the actual quantities and the percentages must be the same

(640,000/1,300,000) = x%/100%

x% = (640,000/1,300,000)*100% = 49.23%

Then the percentage declined is:

100% - 49.23% = 50.77%

The other question can not be answered with the given information.

4 0
3 years ago
Controlling the rates of transcription and translation is important in bacteria to avoid collisions between ribosomes and rna po
7nadin3 [17]

The right answer is 20 aminoacids per second.

Transcription is a mechanism for synthesizing RNA from DNA.

Translation is a mechanism for synthesizing a polypeptide sequence from mRNA by converting the nucleotide triplet (codons) to amino acids.

So if one amino acid corresponds to three nucleotides. The polypeptide synthesis rate should be 20 amino acids per second for 60 nucleotides per second.

3 nucleotides ==> 1 amino acid

60 nucleotides ==> 60/3 = 20 amino acids.

4 0
3 years ago
Three questions to answer you can do however much you want but PLEASE ANSWER
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