In order to protect a stream or lake from excessive inputs of nutrients and pollutants, we must protect its ____.
A. biodiversity
B. tributaries
C. riparian zones
D. banks
E. watersheds
Answer: E
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Light-water reactors generate about ____ of the world's nuclear-generated electricity
a. 95% b. 85% c. 75% d. 65% e. 55%
What involves the introduction into the ocean by humans of substances or energy that changes the quality of the water or affects the physical, chemical, or biological environment?
A) sustainability B) marine pollution C) nonextractive resource use D) mariculture
Genetically modified crops ____.
A. need more fertilizer B. need more water C. could reduce biodiversity D. cannot tolerate herbicides E. produce lower yields
Which of the following is NOT a way that volcanoes and magma can cause earthquakes?
A. Many volcanoes have steep, unstable slopes that can cause landslides that shake the ground. B. Moving magma within or below the volcano can cause earthquakes. C. Volcanoes can load the crust, causing faulting and earthquakes. D. Volcanic explosions cause seismic waves. E. All of these are ways that volcanoes can cause earthquakes.