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Which statements about Earth’s atmosphere are correct? Check all that apply. helpppp

The most abundant gas in the atmosphere is oxygen.
Carbon dioxide in the atmosphere is important for plants.
The troposphere shields Earth from chunks of rock from space.
The stratosphere is located 50 to 80 kilometers from Earth’s surface.
The troposphere gets colder the higher you go.
The ozone in the stratosphere protects us from ultraviolet radiation.
The amount of water vapor in the air is nearly constant.

Respuesta :

2, 5, and 6 are the correct answers.

snehashish65

The statements (2), (4) and (5) are correct. That are as follows:

  • Carbon dioxide in the atmosphere is important for plants.
  • The stratosphere is located 50 to 80 kilometers from Earth’s surface.
  • The troposphere gets colder the higher you go.
  • The ozone in the stratosphere protects us from ultraviolet radiation.

Let us consider each of the given statements in the order of 1, 2, 3, 4, 5, 6 and 7. Now let us check each of the statements as,

1) The most abundant gas in the atmosphere is Nitrogen which has the composition of 78% in the air. So, oxygen is not the most abundant gas in atmosphere. Hence, the statement is incorrect.

2) Carbon dioxide is an important gas for the plant to accomplish the process of photosynthesis. Hence, the statement is correct.

3) The mesospheric layers shields the Earth from the rocky chunks coming from the space. Hence, the statement is incorrect.

4)  The stratosphere lies just above the troposphere and it extends upto 50 - 80 kilometers above the Earth's surface. Hence, the statement is correct.

5) Troposphere undergo the temperature change as it goes higher, the temperature drops and its gets colder. So, the statement is correct.

6) The ozone layer has the major functionality to trap the harmful ultraviolet rays (UV rays) to reach the Earth. Hence, the statement is correct.

7)  The amount of water vapor in the air is not always constant and depends on the climatic conditions. It varies from 0.01% at 42 Degree Centigrade to 4.24% at 30 Degree Centigrade. Hence, the statement is not correct.

Thus, we can conclude that the statements (2), (4), (5) and (6) are correct.

Learn more about the atmospheric conditions of Earth here:

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