Sustainable water resources in the future will require:
a. increased efficiency of irrigation
b. greater crop yields
c. restriction of groundwater withdrawals to sustainable levels
d. all of the above
d
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Why does lead have so many industrial uses?
A) It is extremely cheap to mine and process. B) It has very strong bonds, making is a valuable hard mineral used for vehicles. C) It is a metal, and therefore is an excellent conductor of electricity and is used for power lines. D) It can be easily cast, molded, and shaped, as well as be used for its chemical properties in glazes, batteries, and gasoline.
What commonly lies at the top of a salt dome?
a. oil b. gas c. sulfur d. salt e. coal
The language family encompassing the languages of the People's Republic of China is
A) Indo-European. B) Indo-Iranian. C) Mandarin. D) Sino-Tibetan. E) Austro-Asiatic.
Which of the following statements is out of order in the ideal application of the scientific method?
A) Observe a phenomenon that stimulates a question. B) Design an experiment. C) Observe the outcome of an experiment. D) Formulate a rule. E) Make a hypothesis.