Which of the following location is severely eroding?
A. Miami, FL
B. Portland, ME
C. San Francisco, CA
D. Tampa, FL
Answer: D
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The measure of how harmful a substance is called its ____________.
Fill in the blank(s) with the appropriate word(s).
Why might the following nuclear reaction not be very good for energy production in a fission reactor?
U ? 
Th + 
He + 3 neutrons
A. Interatomic attraction between the products will impede the separation of the atoms from the unstable nuclei. B. The material only produces a few neutrons so the chain reaction will not be very efficient. C. The mass of the by-products is too high, and therefore, the energy released will not be large enough. D. The reactants are too small to obtain much energy from the missing mass due to the strong nuclear force. E. The products are not the right size to obtain much energy from missing mass due to strong nuclear force.
What is the study of life as revealed by fossils?
A)genetics B)paleontology C)classification D)history E)geology
How does the amount of 16O in forams compare to that in the oceans?
A. It is the same B. It is smaller C. It is larger