All of the following are found in chromosomes except
A) DNA.
B) RNA.
C) histones.
D) proteins.
B
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A stone whirled at the end of a rope follows a circular path. If the rope breaks, the stone tends to
A. follow a straight-line path. B. spiral inward. C. continue in a circular path. D. fall straight downward.
Resources that are called nonrenewable are
A. also called perpetual resources. B. the only resources that are alive. C. a fixed quantity in the earth's crust. D. derived from solar capital. E. found almost everywhere on the earth.
Oil shales and tar sands contain trillions of barrels of oil that are chemically locked in the formations
Indicate whether the statement is true or false.
What describes a change in wave direction as waves approach a headland concentrating energy there?
A. refraction B. erosion C. oscillation D. translation E. reflection