What kind of energy is represented by water backed up behind a dam?
A. potential
B. kinetic
C. electromagnetic
D. nuclear
Answer: A
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The upper mantle can be divided into two zones, the
A. Moho and the lithosphere. B. continental mantle and the oceanic mantle. C. asthenosphere in the lower upper mantle and part of the lithosphere in the upper part of the upper mantle. D. asthenosphere in the upper, upper mantle and the lithosphere in the lower upper mantle.
The continental shelf contains about 90% of all ______________ ______________
Fill in the blanks with correct word
Genes are located in which type of molecules?
A) DNA B) histones C) proteins D) RNA
In the partnership of a lichen, the fungus provides ________ and the relationship is best described as ________.
A. Some of the photosynthesis; commensalism B. Most of the photosynthesis; symbiosis C. Structure and moisture-holding ability; mutualism D. Poisons that deter predation; commensalism E. Very little to the algal partner; parasitism