Bed load on natural river beds can be transported in the following ways:
a. rolling
b. sliding
c. saltation
d. all of the above
e. both a and b
Answer: d. all of the above
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Which of the following is true of liquid ethers?
A) They are both volatile and highly flammable. B) They are neither volatile nor highly flammable. C) They are volatile, but are not flammable. D) They are flammable, but are not volatile.
Exurbs are "boomtowns" that are in remote areas for only one reason--access to
A) hiking and camping. B) farmland. C) wildlife. D) affordable housing. E) free parking.
This gas is a more efficient greenhouse gas in comparison to carbon dioxide, but it has a far lesser presence in earth's atmosphere:
A. water vapor B. methane C. ozone D. carbon monoxide
A large portion of industrial timber comes from managed, replanted forests in North America and Europe.
Answer the following statement true (T) or false (F)