Question

The ozone layer helps to sustain terrestrial life by __________.

a. absorbing incoming UV radiation
b. keeping levels of ozone in the troposphere low
c. maintaining the Earth's temperature structure
d. all of the above

Answer 1

The right option is; d. all of the above

The ozone layer is a part of Earth's stratosphere that acts as a shield, absorbing most of the Sun's ultraviolet radiation. The ozone layer helps to sustain life on earth by filtering out or absorbing biologically damaging ultraviolet radiation from the sun. It controls the level of ozone in the lower atmosphere (troposphere). The ozone in the troposphere is harmful to humans because it can damage the lungs. The ozone layer also plays an important role in the Earth's temperature structure.

Answer 2

The ozone layers helps to sustain terrestrial life by absorbing the incoming UV radiation, maintaining the Earth's temperature structure, and keeping the ozone in the troposphere low. All of the choices given are correct.