Author Question: Nationwide in the United States, particulates come mostly from ________, but in urban areas they are ... (Read 59 times)

lunatika · **on:** Jul 14, 2018

Nationwide in the United States, particulates come mostly from ________, but in urban areas they are derived from vehicles and industrial sources.

A) soil erosion
B) smoke from burning forests
C) coal-fired power plants
D) roads and construction sites
E) non-U.S. sources

Question 2

China and India together are about ________ percent of world population, but they have less than ________ percent of the world's renewable fresh water.

A) 75; 21
B) 37; 29
C) 37; 9
D) 25; 4
E) 50; 9