Which of the following substances is present in the earth's atmosphere? water vapor, dust, ozone, plastic

I believe the answer would be ozone

Explanation:

The ozone layer in the atmosphere is responsible for making sure that the sun doesn't vaporize us.

community or area create social relationships that typically differ greatly from the affiliations ultimate effects of travel experiences on the population in areas of origin, as well as in places of wage of only a dollar or two. motorcoach operators, museums, and restaurants fall into the broad category of public

explanation:

the answer is b. apsidal precession