How would melting all of the world's glacial ice affect the flow of streams and rivers? What will be an ideal response?
Many rivers and streams are able to flow year round because of water stored in glacial ice. The ice is
basically a natural reservoir that slowly releases its stored volume during the summer. Without this ice,
it is likely that many rivers would cease to flow during the dry portion of the year
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When any electrical device in a vehicle is turned on (such as an air conditioner), a greater amount of fuel is consumed by the engine. This statement is
A. always false. B. sometimes true, sometimes false. C. true. D. true only if the engine is running.
Critical Thinking
What does the accompanying age structure diagram imply about the economic productivity of this country?
What will be an ideal response?
Ticks feeding on the blood of a field mouse exemplify
A. competition. B. predation. C. parasitism. D. mutualism. E. commensalism.
Which of the following cannot vary for a particular element?
a. atomic number b. atomic mass c. number of neutrons in the nucleus d. atomic charge