What is a common approach used to deal with collapsible soil when constructing water canals?
a. Waterproof it with an impermeable barrier.
b. Remove all of it and replace it with an engineered fill.
c. Precollapse it by soaking it with water.
d. Use a reinforced concrete lining for the canal.
e. Extend sections of very large diameter pipe through these areas.
C
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Joints can provide rocks with some porosity and permeability
Indicate whether the statement is true or false
Tropical wet and dry climates
A) usually cluster near the equator. B) owe much of the seasonal changes in precipitation to the shifting of the Hadley cell. C) can suffer from floods, but not drought. D) have little variability in precipitation from year to year.
The exponential rate of global population growth has declined since the 1960s.
Answer the following statement true (T) or false (F)
What kind of metabolic rate do humans have?
a. Endothermic b. Exothermic c. Ectothermic d. Hyperthermic