The use of the same insecticide or herbicide over several years
A. causes the soil to accumulate the pesticides.
B. selects for pests that can resist the pesticides.
C. causes the price to rise because the demand is high.
D. None of the statements is correct.
Answer: B
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The biologists' observations that the Carson Wandering Skipper populations had declined is an example of
a. data analysis b. identifying a problem c. performing an experiment d. proposing a hypothesis e. making testable predictions
One of the most harmful contaminants that might reach groundwater from sewage lagoons or septic tanks is:
a. sodium b. sulfate c. nitrate d. chloride
Mauna Loa, a shield volcano in Hawaii, is approximately 10 km in height. Olympus Mons is a shield volcano on Mars that is approximately 27 km in height
Compare the formation of both of these volcanoes. How is it that Olympus Mons could grow so much taller than Mauna Loa? What will be an ideal response?
Which of the following is not one of the pluvial developments of the Pleistocene Epoch?
A) Increased rainfall B) Decreased evaporation C) Increased runoff D) Increased mass of glacial ice E) Increased numbers of lakes