The critical part of the atmosphere for protecting life on the ground from excessiveultraviolet radiation is the:
A)hydrosphere.
B)troposphere.
C)ozone layer.
D)stratosphere.
E)ionosphere.

Question

Quizplus · Accepted Answer

The ozone layer, located in the stratosphere, absorbs harmful ultraviolet radiation from the sun before it reaches the Earth's surface. Without the protection of the ozone layer, life on Earth would be exposed to harmful amounts of UV radiation, which can cause skin cancer, cataracts, and other health problems. The ozone layer is found in the stratosphere and it absorbs most of the ultraviolet radiation from the sun, which otherwise can cause various health issues like skin cancer, cataracts, and immune system suppression. The hydrosphere is important for the water cycle, but it does not play a significant role in protecting against ultraviolet radiation. The troposphere is too low to block most ultraviolet radiation. The ionosphere is a higher part of the atmosphere that is important for radio communication but does not affect ultraviolet radiation.

The Critical Part of the Atmosphere for Protecting Life on the Ground