An atom has 2 electrons, 3 protons, and 3 neutrons. What is the atom's charge?
A) ?2 B) +8 C) +1 D) ?1 E) +3
Answer: C
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A type of human that inhabited the Near East and Europe from 200,000 to 30,000 years ago; may
be a subspecies of Homo sapiens or a separate species:a. Cro-Magnon d. primates b. australopithecines e. anthropoids c. Neanderthals
Sandstone is a detrital sedimentary rock mostly composed of particles measuring 1/16-2 mm in
size. Indicate whether the statement is true or false.
Which of the following factors is most important in determining the strength of a tornado?
a. diameter b. air temperature c. duration d. central pressure
We risk falling behind in our efforts to prevent infectious bacterial diseases with the use of antibiotics because of the ____.
A. apathy of the general public B. astounding reproductive rates of bacteria C. lack of incentive for pharmaceutical companies to create these drugs D. alarming rates of unprotected sex E. increased rates of air travel