The Earth's atmosphere is important because:
A) it is primarily composed of oxygen, essential for our survival.
B) it is composed of approximately twenty different layers.
C) it protects us from UV radiation and X-rays.
D) it is a stable and unchanging part of our global environment.
E) the densest outer layer shields the Earth's surface from dangerous forms of energy.

Question

Quizplus · Accepted Answer

The Earth's atmosphere plays a critical role in protecting life on Earth from harmful radiation, such as UV radiation and X-rays, emitted by the sun and other sources. This is essential to our survival and well-being. Options A, B, D, and E are incorrect as oxygen is only a small fraction of the Earth's atmosphere, there are not twenty different layers, the atmosphere is not stable or unchanging, and the densest outer layer does not shield the Earth from all dangerous forms of energy.

The Earth's Atmosphere Is Important Because