Why is infinite population growth not possible?
A. Water supplies are stretched to the limit in many places.
B. Topsoils are being lost at an alarming rate.
C. Supplies of crude oil and gas are in decline.
D. All of these choices are correct.
Answer: D
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What will be an ideal response?
Jet streaks are thought to have little to do with the development of severe thunderstorms
a. true b. false
Over the last 275 years, the relative sea-level rise in Venice has been
A) about 120 centimeters. B) about 70 centimeters. C) about 50 centimeters. D) about 30 centimeters.
Which of the following is a true statement concerning energy flow in ecosystems?
a. The biomass usually increases with each successive trophic level. b. There is energy loss within each successive trophic level. c. There is an increase in energy when an organism at one trophic level feeds on another. d. The greatest amount of energy and biomass is concentrated at the heterotroph level.