Genetic variation _____
A) is created by the direct action of natural selection
B) arises in response to changes in the environment
C) must be present in a population before natural selection can act upon the population
D) tends to be reduced by when diploid organisms produce gametes
C
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This biome is situated around the equator and boasts the greatest biodiversity of any biome
A. temperate grassland B. chaparral C. savanna D. deciduous forest E. rain forest
The electronic configuration of the noble gas Neon, which has an atomic number of 10, can be written as follows: 1s22s22p6 . What is the electronic configuration of the noble gas Argon, which has an atomic number of 18?
A. 1s22s22p63s23p6 B. 1s22s62p23s63p2 C. 1s22s83p8 D. 1s22s23p64s25p6
Chronosequences are useful because one can
A) view several taxa in one sere. B) view several seres in one region. C) measure the impacts of disturbance. D) count the number of trees in one sere.
A Sense of Proportion: Arrange the following main sequence stars in order of increasing surface temperature: