In Earth's history, what might the cooling of the Earth and the resulting change from a forested to a grassy landscape have made adaptive in humans?
A. social structure
B. grasping fingers
C. complex language
D. bipedalism
Answer: D
Biology & Microbiology
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The only part of the nervous system under
voluntary control is the ___ nervous system.
a. somatic b. autonomic c. central d. sympathetic e. parasympathetic
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The atomic number of an atom is
A. the number of neutrons in the atom. B. the number of protons and neutrons in the atom. C. the number of protons in the atom. D. the number of protons and electrons in the atom. E. None of these choices are correct.
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Which of the following water-borne pathogens are protozoans?
A. Hepatitis A B. Norwalk virus C. Giardia D. Vibrio E. Shigella
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Which phase of development occurs just prior to the postnatal period?
a. zygote b. embryo c. fetus d. neonate e. infancy
Biology & Microbiology