Which of the following products used by humans sometimes comes from plants?
A) fuel, only
B) clothing, only
C) food, only
D) fuel, clothing, and food
D
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Disadvantageous recessive alleles are protected from natural selection due to ____
a. homozygosity b. diploidy c. genetic drift d. haploidy
e. adaptationThe most common mode of transmission for sinusitis is ________.
A. direct contact B. endogenous infection C. droplet contact D. indirect contact E. exotoxin
Which of the following elements favors
fossilization?
a. death in an isolated area b. rapid burial c. a bony skeleton d. all of these elements favor fossilization e. one or more of these is an element that does NOT favor fossilization
The main function of salivary mucus is to
a. break down starch. b. mechanically breakup food materials. c. make the food particles sticky. d. hydrate dry food particles. e. do more than one of these