Floodplains are made ____
a. by tectonic activity
b. by glaciation
c. of alluvium
d. artificially by people
c
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The avoidance of making decisions that cannot be reversed later if they turn out to be harmful is called the ____.
A. precautionary principle B. net energy principle C. reversibility principle D. prevention principle E. polluter-pays principle
According to Figure 17.9, which of the following materials would you expect to have the most sufficient porosity and permeability and be able to provide water in useful quantities?
A) granite B) sandstone C) limestone D) sand
More frequent heat waves are a possible outcome of climate change in Europe
Indicate whether the statement is true or false
The swelling behavior of highly expansive soils can be decreased by treating the soil with:
a. sodium b. potassium c. calcium d. chloride