Water at 4°C sinks to the bottom of a pond because
A. like a rock, it is denser than surrounding water.
B. it benefits fish and other life forms there.
C. of the presence of microscopic ice crystals.
D. it will not freeze there.
Answer: A
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Which of the following best indicates a location where sediment is deposited but not eroded?
A) Location 1
B) Location 2
C) Location 3
D) Location 4
Which of the following are considered incidental catch?
A. porpoise in tuna nets B. birds in salmon nets C. turtles in shrimp trawls D. All of these are correct. E. None of these is correct.
Environmental policies
A) may be cost-neutral or may come at a monetary cost, depending on the time frame for their evaluation. B) are always expensive, costing consumers and industry more money. C) never have a monetary cost associated with them. D) are paid for by local tax dollars, only indirectly costing most citizens nothing for their implementation.
________ are composed of amino acids
A) Proteins B) Lipids C) Bases D) Carbohydrates E) Nucleic acids