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lions [1.4K]
3 years ago
14

Which of the following is true about Earth's crust?

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

Answer:

?

Explanation:

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Is potassium a mineral and an electrolyte?
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Electrolytes are minerals in body fluids. They include sodium, potassium, magnesium, and chloride.

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What is occuring during the capillary stagnation phase of hemorrhagic shock. arteriole constriction causes the pre-sphincter mus
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Distributive (or vasogenic) shock is caused by a sudden severe decrease in peripheral vascular resistance that causes extensive pooling of blood within the venous system and subsequent decreased venous return to the heart.

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Which of these is a way to increase the availability of freshwater
Nastasia [14]

Answer:

Option A

Explanation:

Options -

A-avoid water pollution.

B-build thermal power plants.

C-add water features to gardens.

D-avoid drip irrigation systems

Solution -

The largest source of freshwater on planet earth is underground water. The water beneath the surface of earth is very limited. The total fresh water reserve on earth is 3% of the total water on earth. Pollution due to discharge of waste water into the rivers and oceans has caused the degradation of not only surface water but also ground water.  

Thus, option A is correct

Drip irrigation is a means to prevent wastage of water during irrigation. Thus, avoiding it will cause further loss of fresh water.  

Addition of water feature will increase usage of water, thus it is also incorrect

Building thermal plant will also cause water pollution and wastage. Hence, option  B is also incorrect

3 0
3 years ago
Sodium ions (na+) are essential for
soldier1979 [14.2K]

Answer:

it regulates blood volume and blood pressure.

Explanation:

6 0
3 years ago
Point mutation is a type of what
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Answer:

A point mutation is a type of mutation in DNA or RNA, the cell’s genetic material.

Explanation:

DNA and RNA are made up of many nucleotides. There are five different molecules that can make up nitrogenous bases on nucleotides: cytosine, guanine, adenine, thymine (in DNA) and uracil (in RNA), abbreviated C, G, A, T, and U.

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3 years ago
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