which of the following is true about Earths atmosphere?
a)the atmosphere contains 78 percent water vapor
b)the atmosphere contains 21 percent oxygen
c)the atmosphere allows radiation from the sun to pass through and warm Earths surface
I think it might be B but I'm not completely 100% sure.
answer is B
the answer is B
The correct answer is b) the atmosphere contains 21 percent oxygen.
To determine the true statement about Earth's atmosphere, we can analyze each option:
a) "The atmosphere contains 78 percent water vapor": This statement is incorrect. While water vapor is indeed present in the atmosphere, it does not make up 78 percent of the atmosphere.
b) "The atmosphere contains 21 percent oxygen": This statement is correct. Oxygen is one of the primary components of Earth's atmosphere and makes up around 21 percent by volume.
c) "The atmosphere allows radiation from the sun to pass through and warm Earth's surface": This statement is true. The atmosphere is composed of different gases that are transparent to solar radiation, allowing it to pass through and reach the Earth's surface. This process is known as the greenhouse effect.
Therefore, the correct answer is b) "The atmosphere contains 21 percent oxygen."