A student reads the following statement. The presence of greenhouse gases in Earth's atmosphere is important to Earth's ability to support human life.
How would Earth be different without greenhouse gases in its atmosphere?
A. More heat from solar radiation would escape into space.
B. More solar radiation would be reflected back into space.
c. More solar radiation would penetrate Earth's crust and mantle.
D. More beat from solar radiation would be stored in Earth's core,

The correct answer is A. More heat from solar radiation would escape into space.

Explanation

Greenhouse gases are a set of gases present in the earth's atmosphere that have the function of regulating the temperature by retaining and radiating heat energy. One of the sources of heat energy for greenhouse gases is radiation from the sun, which reaches planet Earth, passes through the atmosphere, and reaches the earth's surface where a part is reflected out of the atmosphere and another part is retained and irradiated by greenhouse gases in different directions, being retained between the atmosphere and the earth's surface, contributing to temperature regulation. Therefore, the correct answer is A. More heat from solar radiation would escape into space.