According to some scientists, the more diverse an ecosystem is, the ____ it will be.
A. less productive
B. less abundant
C. less even
D. more productive
E. more even
Answer: D
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Temperature is mainly affected by the
A. molecular motion in a substance. B. amount of a substance. C. both of these D. none of the above
What is an internal cost of driving a domestic car?
A. Air pollution and litter B. Cost of materials used in manufacture C. Highway accidents D. Health costs E. Hazardous wastes produced by car exhaust
The following population pyramid is indicative of
A) a country with very few children
B) rapid growth
C) zero growth
D) slow growth
E) negative growth
Examples of ways that pesticide use can be reduced include
A. crop rotation. B. monoculture. C. crop rotation and biological control. D. monoculture, crop rotation, and biological control. E. biological control.