Author Question: Until regulation of air pollution began in the 1950s, the greatest influence on emissions of air ... (Read 20 times)

urbanoutfitters · **on:** Jul 14, 2018

Until regulation of air pollution began in the 1950s, the greatest influence on emissions of air pollutants was/were:

A) lack of education about pollution's ill effects.
B) macroscale atmospheric changes.
C) both economic conditions and population growth.
D) poor technology.

Question 2

How is the daily temperature range affected by the presence of clouds?

A) The temperature range is lower when clouds are present.
B) The temperature range is greater when clouds are present.
C) The temperature range is not affected by the presence or absence of clouds.
D) Temperature range is not affected in a predictable way by the presence of clouds.