How long do most forms of marine life require to recover from a crude oil spill?
a. 2 years
b. 5 years
c. 7 years
d. 10 years
e. 20 years
b
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The increased elevation of some areas of Scandinavia is the result of
a. outwash. d. the Little Ice Age. b. glacial rebound. e. varve. c. the Milankovitch Theory.
Why are sedimentary rocks important?
What will be an ideal response?
Explain (a) the difference between potential and known reserves and (b) why the cost of extracting potential reserves of fossil fuels is often economically prohibitive
What will be an ideal response?
There are two high tides and two low tides in each 25-hour period because
A) Earth orbits around the Sun in a little over 24 hours. B) the Moon orbits Earth in 25 hours. C) Earth completes a full rotation every 24 hours but the Moon moves too. D) heating and cooling of the seas occurs twice each day.