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zaharov [31]
3 years ago
6

HELP with all 3 of them please ​

Biology
1 answer:
Umnica [9.8K]3 years ago
8 0

21: 1

9: gmo

20: i dont know sorry.

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Why are most of Earth's deserts located in the subtropical zone?
NeTakaya

Hot air always rises from the equator. As this air climbs higher in the sky, it cools. Cool air can hold less water than warm air. This means that as the air cools, clouds form that release most of the water they hold. Because the cooling air is above the equator, the moisture rains back down on the tropics.

6 0
3 years ago
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A pigment solution contains compound A with 4 polar groups and compound B with 2 polar groups. You plan to separate these compou
Karolina [17]

The more polar A compound moves ahead of the less polar B compound.

Explanation:

The analytical process that involves the separation of colored substance or chemicals is named as paper chromatography, a replacement of thin-layer chromatography. In this method, there is the use of two solvents and rotation of paper at 90^0. It helps in isolating two complex compounds of equal polarity.

A non-polar mixture of solvent is required in the mobile phase of this method. In accordance with the retention factor of this process, the more polar compound A will go further than compound B as the solvent is non-polar.

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3 years ago
The strong risk factors for colon cancer include which of the following? (Select all that apply.) A. Aging B. Gender C. Heredity
USPshnik [31]

Answer:

a. Aging

c. Heredity

d. Crohn disease

e. High-fat diet

Explanation:

Colon cancer involves the abnormal growth of cells in the colon found in the large intestine.

Colon cancer is found to be hereditary in about 10 percent of patients .

It is also common with individuals who are used to taking high fat diets and affects most people older than 50 years old.

Crohn’s disease is also found to be a risk factor for having colon cancer.

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3 years ago
A pair of amino acids is chemically bonded is called as,
N76 [4]

Answer:

Peptide bond

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Peptide a short chain of amino acid; therefore the bond present is called peptide bond

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3 years ago
The process by which water crosses a selectively permeable membrane is called
nataly862011 [7]

Answer:Osmosis is a type of diffusion

Explanation:

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