The biome with the greatest amount of topsoil and
the richest, most fertile soil is the
a. tundra.
b. taiga.
c. tropical rain forest.
d. desert.
e. grassland.
Answer: e
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Which of the following statements is TRUE when comparing the myosin gene between a rat and a mouse?
A. The nucleotide sequences are identical. B. The genes encode for different proteins. C. Each species has accumulated random mutations, but the sequences are similar. D. Both species are so far apart that there is no homology between the two sequences. E. The genes encoding myosin closely resemble those encoding actins.
The most common joint injury is a
a. separated shoulder. b. fractured knee. c. broken wrist. d. dislocated shoulder. e. sprained ankle.
One job of the nuclear membrane is to
A. control entry to and exit from the nucleus. B. produce enzymes. C. digest chromosomes. D. contain excess water.
Lactic acid, an end product of fructose fermentation, causes breakdown of tooth enamel and, eventually, cavities
Indicate whether the statement is true or false