Oceans and the tropical rain forests contribute equally to global productivity
Indicate whether the statement is true or false.
ANSWER: True
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How are DNA and RNA similar?
a. They are both comprised of long chains of nucleotides. b. They are both comprised of deoxyribonucleic acid. c. They are both comprised of long chains of glucose. d. None of the above.
In flowering plants, pollen grains form in the flower's male parts called ____
a. stamens b. anthers c. carpels
d. megaspores e. endosperms
Water is important to the interactions of
biological molecules because it a. promotes hydrophobic and hydrophilic interactions. b. stabilizes temperature. c. is an excellent solvent for polar and ionic substances. d. has strong cohesive properties. e. does all of these.
New genes are introduced into a gene pool by
A. evolution. B. spontaneous mutations. C. natural selection. D. inheritance of acquired characteristics.