Of which of the following does the United States have the best supply of reserves, relative to demand?

A. platinum
B. aluminum
C. iron
D. zinc


Answer: C

Environmental & Atmospheric Sciences

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Under the Monroe Doctrine, the United States

A. agreed to rule Mexico B. took over Cuba C. warned European countries not to interfere in Latin America D. made Puerto Rico a "commonwealth"

Environmental & Atmospheric Sciences

List the five principal themes of modern geographic education

What will be an ideal response?

Environmental & Atmospheric Sciences

Whether using a food crop as a source of biofuels is environmentally sustainable would depend upon all of the following, except ________

A) the corporate profits that would be made B) the amount of fertilizers used and their impact on aquatic ecosystems C) the impact on food supplies and prices D) the amount of water and land necessary for the crops E) the amount of pesticides used and their impact on biodiversity and groundwater

Environmental & Atmospheric Sciences

Soil moisture that plants are capable of accessing and using is called

A) wilting point water. B) free molecular water. C) capillary water. D) hygroscopic water.

Environmental & Atmospheric Sciences