Which of the following is correct regarding natural selection?
A. It is based on competition for resources
B. Beneficial traits are passed on to the next generation
C. It enables a species to become better adapted to its environment
D. It may drastically change a species over time
E. All of the answers are correct
E
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Bacteria that live attached to surfaces are described as ________, whereas bacteria that are free-living, floating with a fluid environment are described as ________.
Fill in the blank(s) with the appropriate word(s).
Traditional evolutionary systematics used the Linnaean system of classification
a. True b. False
The meiotic error that results in aneuploid cells is
A) crossing over. C) recombination. D) unequal segregation.
Biological nitrogen fixation is accomplished by symbiotic ________ living in mutualistic association with plants
Fill in the blank(s) with correct word