What percentage of the U.S. population considers the environment to be one of the most pressing issues facing the nation?
A. less than 10%
B. 20%
C. 30%
D. 40%
E. 50%
Answer: A
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If the environmental lapse rate is 5o C per 1,000 m and the temperature at the earth's surface is 25o
C, then the air temperature at 2,000 m above the ground is 20o C. Indicate whether the statement is true or false.
In terms of long-term temperature increases in the atmosphere, which of the following is TRUE?
A) Average global temperature has risen 5°C in the 20th century. B) No changes have been observed in the 21st century. C) The greenhouse effect has never been shown to be real. D) Increases in greenhouse gases have been observed. E) It appears that we can readily curb the carbon dioxide problem.
Which of the following represents a type of top-down regulation for rattlesnakes living in Arizona?
A) The availability of fresh water B) The number of mice in the region C) Abundance of rocks under which snakes can hide D) The number of snake-eating hawks and humans in the region
Nigeria's language diversity is dominated by which language family?
A) Khoisan B) Nilo-Saharan C) Niger-Congo D) Dravidian E) Austronesian