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vova2212 [387]
3 years ago
13

Which of the following best explains why sandy soil usually has low fertility?

Biology
1 answer:
Natasha_Volkova [10]3 years ago
4 0

Answer:

less dirt

Explanation:

means less soil and less minerals

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true breeding plant with green seed is crossed with true breeding plant with yellow seed with yellow being dominate. What color
Alborosie
Yellow [YY] And Green [yy] would be [Yy] (Still yellow)
6 0
3 years ago
A red blood cell with an osmolarity of 300 mOsM (non-penetrating solutes) swells but does not lyse when placed in a 300 mOsM sol
Mashcka [7]

Answer:

See below for answer

Explanation:

<u>A. 200 mOsM NaCl</u>

This solution is hypotonic to the red blood cell (RBC) with penetrating solute. The RBCs will swell up and burst because the water will move into the cells.

<u>B. 400 mOsM urea</u>

This solution is hypertonic to the RBCs with non-penetrating solutes. Water will leave the cells via osmosis and the cells will shrink and appear shriveled.

<u>C. 100 mOsM urea plus 200 mOsM NaCl</u>

This time both penetrating and non-penetrating solute is present. The solution is isotonic to the RBCs and although there will be movement of water between the cells and the solution, there will be no overall change in the concentration of water for each and no change in appearance of the cells.

<u>D. 300 mOsM urea</u>

The RBCs will not lyse nor shrivel as again the solution is isotonic to the RBCs.

8 0
3 years ago
Many children were paralyzed by polio in the 1950s. Today, polio has been reduced by 99 percent. Which statement best explains h
insens350 [35]

Answer:

D

Explanation:

4 0
3 years ago
Read 2 more answers
Growth and repair involve primarily what type of reactions?1. catabolic2. It depends on which body or cell part is growing or re
Rus_ich [418]

Answer:

Anabolic.

Explanation:

The metabolic reactions of the body are important to maintain the physiology and homeostasis of the body. Two main types of reaction in the body are catabolic reactions and anabolic reactions.

The anabolic reaction is the reactions that are involved in the formation of the large molecules from the simpler substances. The anabolic reactions are involved in the growth and repair process as complex protein and factors are required that can only be obtained by the anabolic reactions.

Thus, the correct answer is option (3).

4 0
3 years ago
What moves through the community from one trophic level to another as organisms feed on one another?
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Energy moves from one trophic level to another as organisms feed on one another.

Explanation:

Energy flows from one trophic level to another in a food chain. according to the ten percent law, only ten percent of the total energy passes onto the next trophic level. While studying the energy flow model two aspects should be taken under consideration. Firstly, the flow of energy is unidirectional and passes on from autotrophs to primary consumer and then secontary, tertiary so on. Secondly the amount of energy decreases at succesive trophic level.

6 0
3 years ago
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