The presence of ozone in the upper atmosphere is important because?

Question

The presence of ozone in the upper atmosphere is important because

A. O3 absorbs outgoing radiation from the earth's surface, thus helping to keep the earth warm.
B. O3 absorbs harmful solar radiation.
C. O3 dissolves in water droplets and is very reactive.
D. O3 is a major reactant in photosynthesis.

Answer 1

B) ozone blocks solar radiation, which is why we need ozone in the atmosphere, or we will all die of radiation.

Answer 2

E. None of the above. Although O3 does absorb some of the incident UVB radiation, the major reaction that protects us from UVB is
3O2 + UVB → 2O3. O3 is unstable, with a half-life of about 21 hours, so the importance of O3 in the upper atmosphere is that it is the end product of the UVB--O2 reaction.

Answer 3

b

Answer 4

B

Answer 5

..answer s B.