Earthʹs ozone layer is extremely important because it
A) traps heat so that Earthʹs temperature does not fall too much.
B) blocks incoming UV radiation, which is damaging to animals and reduces photosynthesis in plants and algae.
C) maintains high carbon dioxide concentrations so that photosynthesis can occur.
D) blocks incoming visible light to protect Earth against the greenhouse effect.
E) traps harmful infrared rays.

Question

Quizplus · Accepted Answer

The ozone layer is crucial because it absorbs and blocks most of the sun's harmful ultraviolet (UV) radiation. This protection is vital for preventing skin cancer in humans and for minimizing damage to animals and plants, which can be harmed by excessive UV exposure, thus reducing their ability to perform photosynthesis effectively.

Earthʹs Ozone Layer Is Extremely Important Because It