Author Question: With the Air Pollution Control Act and the Clean Air Act's subsequent amendments over the past few ... (Read 40 times)

jayhills49 · **on:** Jul 16, 2018

With the Air Pollution Control Act and the Clean Air Act's subsequent amendments over the past few decades, air quality in the U.S. with regard to criteria pollutants has

A) worsened, with all pollutants significantly increasing.
B) remained about the same for all pollutants.
C) significantly improved for all pollutants except lead, which has worsened.
D) greatly improved for all pollutants.

Question 2

About 30,000 years ago, humans survived most like which of the following organisms?

A) Roaming groups of omnivorous chimps
B) Herds of herbivorous bison and elk
C) Flocks of herbivorous geese migrating broadly across continents
D) Isolated carnivorous cougars hunting for their own meals