Paleozoic and Mesozoic marine invertebrate faunas differ primarily because ____
a. mammals had not yet evolved in the Paleozoic
b. birds had not yet evolved in the Paleozoic
c. most Paleozoic faunas were nektonic
d. Mesozoic fauna with hard and soft parts burrowed in the sediment
e. more Mesozoic fauna were nektonic
d
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Which of the following characterizes the winter monsoon in eastern and southern Asia?
A. wet weather and winds blowing from land to sea B. wet weather and winds blowing from sea to land C. dry weather and winds blowing from land to sea D. dry weather and winds blowing from sea to land
If the first tropical storm of the season was named Andrea, then a likely name for the second tropical storm of the season would be ____
A) Bonnie B) Bertha C) Bill D) determined by its discoverer
All of the following are major steps to controlling air pollution except ________
A) identification of the pollutants B) determination of major sources of pollutants C) implementing strategies to meet the air pollution standards D) finding cures for the diseases caused by air pollutants E) developing agreements among countries to limit air pollution
Rainwater is slightly acidic because it absorbs ____ in the atmosphere
a. oxygen b. nitrogen c. methane d. argon e. carbon dioxide