Consider the following statements 1 An atmosphere is more likely to be retained if the gravity it is...........

Geography Atmosphere

Consider the following statements:

1. An atmosphere is more likely to be retained if the gravity it is subject to high and the temperature of the atmosphere is low.

2. The atmospheres of the planets Venus and Mars are primarily composed of carbon dioxide with small quantities of nitrogen, argon, oxygen and traces of other gases.

Which of the statements given above is/are correct?

1 only

2 only

Both 1 and 2

Neither 1 Nor 2

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Explanation:

Atmosphere is a layer or a set of layers of gases surrounding a planet or other material body, that is held in place by the gravity of that body. An atmosphere is more likely to be retained if the gravity it is subject to is high and the temperature of the atmosphere is low. The atmosphere of Earth is composed of nitrogen (about 78%), oxygen (about 21%), argon (about 0.9%), carbon dioxide (0.04%) and other gases in trace amounts.