Since 1960, pesticide use has increased ________ worldwide.
a. sixfold
b. threefold
c. fivefold
d. twofold
e. fourfold
Answer: e. fourfold
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Which reproductive pattern is most common, if one considers patterns seen in all animals?
a. Producing large numbers of offspring at short intervals, and providing no parental care or protection. b. Producing few offspring later in life, and providing extensive parental care and protection. c. A reproductive pattern that is somewhere between the two extremes described in a and b. d. Most living organisms actually switch between the two patterns described in a and b. e. No such patterns have ever been observed in nature.
List three uses for nonpotable water. What will be an ideal response?
Because of the low levels of energy involved, weathering processes rarely produce valuable mineral concentrations
Indicate whether the statement is true or false
Maximum velocity occurs when the stream is at the bankful stage
Indicate whether this statement is true or false.