Which of the following statements is NOT true
about asteroids?
a. They have had little influence on the
history of life.
b. They do not emit light and are difficult to
see.
c. Their impacts have produced craters visible
in satellite images.
d. One asteroid impacted our planet just prior
to the mass extinctions at the K-T
boundary.
e. An asteroid impact releases an enormous
quantity of energy.
A
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Protists are NOT monophyletic. This means:
A. that all protists are of the same lineage B. that all protists are more closely related to each other than they are to any other kind of organisms C. that all protists are not more closely related to each other than they are to some other kinds of organisms D. that all protists are not in the same phylum E. that all protists are in the same phylum
According to the first law of thermodynamics,
a. matter can be created and destroyed. b. matter only changes forms. c. energy can be created and destroyed. d. energy only changes forms. e. matter and energy can be interconverted.
A fish circulatory system is indicated by
a. A. b. B. c. C. d. both A and B. e. none of these.
As a stream or river descends, it generally grows
A) faster and cooler. B) slower and warmer. C) faster and warmer. D) slower and cooler.