Rather than arguing over whether the ultimate goal is zero pollution or a reasonable level of pollution, the immediate focus should be to tackle the environmental issues where the _____________________ and the __________________ .
A. marginal benefits are least; marginal costs are greatest
B. marginal benefits are greatest; marginal costs are least
C. environmental benefits are greatest; social costs are least
D. social costs are greatest; environmental benefits are least
B. marginal benefits are greatest; marginal costs are least
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It is predicted that as carbon dioxide levels rise, Earth will ____
a. become more sensitive to Milankovitch cycles b. experience an increase in the rate of plate movement c. likely experience more glacial periods d. become cooler e. become warmer
Subtropical deserts
A) are not affected by subsidence from Hadley circulation. B) are usually found on the eastern portions of continents. C) have large diurnal temperature ranges. D) show little seasonality in rainfall.
The Hawaiian islands were formed volcanism associated with a(n) ________
Fill in the blank(s) with correct word
Fossil discoveries indicate that whales evolved from mammals on land about ________ million years ago
A) 50 B) 60 C) 70 D) 80 E) 90