What are the causes of tides?
a. The gravitational force of the Moon
b. The gravitational force of the Sun
c. The centrifugal force produced by the evolution of the Earth-Moon System around its center of mass
d. all of the above
e. Both a and c
Answer: d. all of the above
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Most bookstores in major cities have more books on
A. pseudoscience than science. B. science than pseudoscience. C. not enough information to estimate D. none of the above
During a change in state of water, which is true?
a. As temperature increases (or decreases), heat stays the same. b. As heat is applied (or removed), temperature increases (or decreases). c. As heat is applied (or removed), temperature stays the same. d. As heat is applied (or removed), density stays the same. e. As temperature increases (or decreases), density stays the same.
The stream competence is different from its capacity.
a. true b. false
The accumulation of salts in the soil through evaporation is called:
A) saltation B) exaltation C) salinization D) saline solution