Which statement about natural selection is not true?
A Genetic variations in a population arise
randomly
B. Genetic variations in a population are
caused directly by the environment.
C. Genetic variations in a population are
small and have little effect
D. None of the above
soof
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The double bond between a carbon atom and two oxygen atoms (a molecule of carbon dioxide) has two characteristics. what are they? a.an ionic bond is formed between the oxygen and carbon atoms. b.four valence electrons are shared. c.two valence electrons are shared. d.valence electrons are shared between oxygen atoms.