(C) oxygen
(D) hydrogen
(E) carbon
- Smog levels in large, urban cities are generally highest during the (A)
summer
(B) spring
(C) fall
(D) winter
(E) The season or time of year does not matter.
- In general, parasites tend to (A) become more virulent as they live within
the host
(B) destroy the host completely
(C) become deactivated as they live within the host
(D) be only mildly pathogenic
(E) require large amounts of oxygen
- The population of a country in 1994 was 200 million. Its rate of growth was
1.2%. Assuming that the rate of growth remains unchanged and all other
factors remain constant, in what year will the population of the country
reach 400 million?
(A) 2020
(B) 2024
(C) 2040
(D) 2054
(E) 2104
- Which of the following contributes LEAST to acid deposition?
(A) Sulfur dioxide
(B) Ammonia
(C) Nitrogen oxides
(D) Lead
(E) All of the above contribute equally to acid deposition.
- The circulation of air in Hadley cells results in (A) low pressure and rainfall
at the equator
(B) high pressure and rainfall at the equator
