Four of the following statements about crocodilians are true. Which statement is false?
a. They live in or near water.
b. They are predators with sharp teeth.
c. They have a two-chambered heart.
d. They have powerful jaws.
e. They are the closest living relatives to birds.
ANSWER: c
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If a child belonged to blood type O, he or she could
NOT have been produced by which set of parents? a. type A mother and type B father b. type A mother and type O father c. type AB mother and type O father d. type O mother and type O father e. type O mother and type B father
The most amount of energy is available to
a. A. b. B. c. C. d. D. e. E.
Which of the following statements concerning the heart is false?
a. It is an organ. b. It contains endothelium. c. It contains nerves
d. It is an organ system. e. Its muscles contain elongated fibers.
What is the reason why we call "fossil fuels" as such?
a. They are the remnants of fuels. b. They are the remnants of fossils. c. They are the remnants of ancient forests. d. They are the remnants of modern forests.