As more is learned about cancer, it has become clear that cancer, with few exceptions, has no genetic basis
Indicate whether the statement is true or false
FALSE
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Population increase is most influenced by ____
a. percentage of humans in the pre-reproductive and reproductive age groups b. number of individuals in the post-reproductive age groups c. percentage of individuals in the reproductive age groups d. number of women in the reproductive age groups e. number of men in any age group
The amount of energy necessary for an
electron to jump to its next level
a. varies depending on the atom. b. is exactly equal to what it needs. c. is always in excess of the needed amount. d. is exactly twice the energy emitted when the electron loses energy. e. is less than the energy emitted when the electron loses energy.
Organisms that obtain their energy from producers or other consumers are
A. heterotrophs. B. autotrophs and producers. C. producers. D. heterotrophs and producers. E. autotrophs.
Red muscles are designed to contract
a. quickly. b. quickly and for short periods. c. slowly. d. slowly for short periods. e. slowly for long periods.