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svetoff [14.1K]
3 years ago
10

An important condition for the formation of coal is ________.

Biology
1 answer:
Anastasy [175]3 years ago
5 0

Answer:

Incomplete decomposition of organic matter due to a lack of oxygen. (Ans D).

Explanation:

Coal is known as the mostly carbon with containing different amounts of oxygen, nitrogen, sulfur, and hydrogen. Coal is formed when Incomplete decomposition of dead plant matter due to a lack of oxygen occurs. In-plant matter because of the pressure, and heat-generating physical, and chemical changes occur which lead to force out oxygen, and carbon deposits left. so, in this time the plant matters become coal.

Coal is divided into three main types which are based on the percentage of hydrocarbon, oxygen, and carbon occurs in the coal.

1) Anthracite coal.

2) Bituminous coal.

3) Lignite coal.

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Answer:

C is the correct option. Storage of carbohydrates is not a function of the skeletal system.

Explanation:

Option A is correct because the skeletal system has parts like the red bone marrow in which red blood cells and white blood cells are produced.

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Option D is correct because the major function of the skeletal system is to provide support and protect the vital organs of the body.

The skeletal system is not involved in storing carbohydrates. Hence, all statements are true except for statement C.

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