In the process of DNA replication, adenine will pair with
A. guanine.
B. cytosine.
C. thymine.
D. uracil.
C. thymine.
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________ produce 40 to 50 percent of the organic carbon in the ocean.
Fill in the blank(s) with the appropriate word(s).
Ginko, a species of gymnosperm tree, has
undergone very little change in its 270 million year evolutionary history. This is an example of evolutionary
a. exaptation. b. stasis. c. radiation. d. sympatric speciation. e. behavioral isolation
____________________ covers and protects the outer surfaces of primary plant parts. Fill in the blank(s) with the appropriate word(s)
The fittest organism in a population is the
A. organism that successfully produces the most offspring. B. strongest and fastest organism. C. organism that lives longest. D. most intelligent organism.