Precipitation that contains a higher than usual concentration of sulfuric and nitric acids is called .

A) proteorhodopsin
B) radiosonde
C) pyroclastic flow
D) permafrost
E) acid rain

30 a town is built on the banks of a small lake on the edge of a desert. after some time, the townspeople discover that water from the lake has become too polluted to use. describe one way that the lake may have been contaminated by the actions of the townspeople, and explain how the townspeople can remediate this problem.

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What is a guest worker? someone who crosses national boundaries to find a permanent job someone who pays a sponsor for the cost of immigration to the country a person who has a daily commute into one country to work but lives in another country an internally displaced person who finds work in a neighboring region someone who is only allowed into another country temporarily for work purposes