The neutral subatomic particle is (are) the
a. neutron.
b. proton.
c. electron.
d. neutron and proton.
e. proton and electron.
A
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Which of the following does (do) not always require the presence of living bacteria?
A. Food poisoning B. Bacterial diarrhea C. Intoxications D. All of the choices are correct.
The carbon source for organisms that derive their
energy from photosynthesis is a. the soil. b. carbon dioxide. c. any hydrocarbon. d. methane. e. glucose.
Respond to statements 99–103 with reference to the five
components of respiratory systems listed below. a. pharynx b. larynx c. trachea d. bronchiole e. alveolus E 99. The voice box is located here. M 100. This is the last component of the human lung that air flows into. M 101. Gas exchange between the air in the lungs and the blood circulatory system occurs here. E 102. Air moves from the nasal cavity into this passageway. M 103. Spent air moves from the bronchial tubes to this component.
Which is true?
A. Neandertals were probably a different species from other early humans. B. Neandertals and Homo erectus were the same genus. C. Australopithecus was first discovered in Central America. D. Several species of Neandertals were discovered in Europe.