Besides Darwin, the theory of evolution by means of natural selection was also independently proposed by:
A. Charles Lyell.
B. Karl Popper.
C. Thomas Malthus.
D. Peter Raven.
E. Alfred Wallace.
E
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When plowing or grazing removes plants and exposes topsoil to wind erosion, the result is often:
a. desertification b. acid rain c. deforestation d. bioaccumulation e. biological magnification
ADH is also called vasopressin. What functions of vasopressin make this an appropriate name for this hormone?
What will be an ideal response?
If the population of flowers illustrated in the accompanying Punnett square is in genetic equilibrium, the frequency of
the homozygous dominant genotype in the new generation will be ____. a. p2 b. 2pq c. p2 + q2 d. q2 e. p2 + 2pq
Gamma radiation ________.
A. is used to sterilize some food products B. has poor penetrating power C. has a longer wavelength than UV radiation D. is a type of nonionizing radiation