A new threat to the food chain in the Great Lakes is:
A. The small mouth bass
B. The northern pike
C. The yellow-perch
D. The Asian carp
Answer: D
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If you wanted to dig through the center of the Earth and come up in Beijing, China, where should you start digging?
What will be an ideal response?
Which of the following is a benefit of using nuclear power?
A) The increasing costs of nonrenewable energy sources make nuclear energy more economically viable. B) Core meltdown of reactors can provide "bonus" energy for electricity production. C) Few greenhouse gases are emitted. D) Using nuclear power requires greater use of fossil fuels. E) Mining activities enhance ecosystems.
Earth's climate cycles between warmer and colder periods
Indicate whether the statement is true or false
Which of the following is a tenet of conventional economic theory?
A) Long-term effects and planning are important. B) Growth is good. C) Externalities are valuable. D) Resources are finite.