Subsidence from the semipermanent Hawaiian high-pressure system
A) contributes to the poor air quality of Los Angeles.
B) improves the poor air quality of Los Angeles.
C) is irrelevant to the poor air quality of Los Angeles.
D) causes adiabatic cooling of pollution.
Question 2
The first major US initiative to clean up the nation's air was
A) the 1870 Clean Air Act.
B) the 1920 Clean Air Act.
C) the 1970 Clean Air Act.
D) the Magna Carta.
