DDT
A. became highly concentrated in carnivorous fish and birds.
B. affected insects but had little effect on humans.
C. was a persistent pesticide.
D. All of the statements are correct.
E. None of the statements are correct.
Answer: D
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What type of slope failure is shown in this figure?
A) Rotational slide
B) Creep
C) Rock avalanche
D) Debris flow
E) Rock fall
The "universal solvent," able to dissolve and transport a wide range of substances, is
A) water. B) air. C) wind. D) soil.
Natural selection is the process that determines
A. who an individual mates with. B. which individuals within a species will reproduce and pass their genes to the next generation. C. which scientist publishes their experiments. D. how active an animal is at night.
Monsoon rains in India form when high pressure over China pulls air southwestward over the peninsula
a. True b. False