Which of the following have aided commercial farmers in MDCs?
A) transportation improvements and the rise of sea levels
B) scientific advances and the reduction in the need for electronics
C) ancient irrigation projects that can be refitted for modern farming
D) transportation improvements, scientific advances, and electronics
E) climate change, scientific advances, and transportation improvements
Answer: D) transportation improvements, scientific advances, and electronics
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Acid deposition can affect forests by
a. Leaching out essential plant nutrients b. Diminishing the supply of Oxygen available to the tree c. Releasing ions that are toxic to the trees d. A and B are correct e. A and C are correct
Which of the following is not correct regarding geothermal energy?
A) It is the product of exogenic processes. B) It's in use in Iceland, Japan, and California. C) Used geothermal water can be returned to aquifers via injection wells. D) It can be used to produce both heat and electricity.
The magnitude of the earthquake is dependent upon the amount of
A. ground displacement. B. ground damage. C. ground failure. D. ground motion.
Why might the following nuclear reaction not be very good for energy production in a fission reactor?
Fe ? 
Si + 
Mg + 3 neutrons
A. The mass of the by-products is too high, and therefore, the energy released will not be high enough. B. The material only produces a few neutrons so the chain reaction will not be very efficient. C. Interatomic attraction between the products will impede the separation of the atoms from the unstable nuclei. D. The products are not the right size to obtain much energy from the missing mass due to the strong nuclear force. E. The reactants are too small to obtain energy from the missing mass due to strong nuclear force.