Fish adapted to cool, dark waters in lakes are found in the ____.
A. limnetic zone
B. benthic zone
C. littoral zone
D. profundal zone
E. abyssal zone
Answer: D
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Which of the following sources of radiation provides most of our yearly exposure?
A. dental and medical X-rays B. televisions (cathode ray tubes) C. living near nuclear power plants D. smoke detectors E. background radiation
Hot spots move with continental plates. Indicate whether the statement is true or false
Which of the following is true?
A) World grain production has remained stable since 1985. B) World hunger has increased significantly since 1970. C) Aquaculture has decreased significantly since 1985. D) The main reason why people are undernourished is because they are not educated about proper nutrition. E) More than one in three adults in the United States is obese.
Elastic solids:
a. are rigid and brittle. b. flow slowly in response to stress. c. are melted rock matter. d. comprise the outer core. e. comprise the asthenosphere.