Rachel Carson's book Silent Spring focuses primarily on the environmental problems associated with ________

A) deforestation
B) aquifer depletion
C) pesticide toxicity
D) invasive species
E) overpopulation


Answer: C

Environmental & Atmospheric Sciences

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Which climate type has no vegetation?

A. EF B. Dfc C. ET D. Dwa E. H

Environmental & Atmospheric Sciences

Which is more polar, a sulfur-bromine (S-Br) bond or a selenium-chlorine (Se-Cl) bond?

A. A sulfur-bromine bond should be more polar because of a smaller difference in effective nuclear charge. B. A sulfur-bromine bond should be more polar because of a greater difference in effective nuclear charge. C. A selenium-chlorine bond should be more polar because of a greater difference in effective nuclear charge. D. A selenium-chlorine bond should be more polar because of a smaller difference in effective nuclear charge.

Environmental & Atmospheric Sciences

Read carefully. Twice as much as one million trillion is two million trillion. One thousand times as much is 1000 million trillion. One million times as much is 1,000,000 million trillion, which is the same as one trillion trillion

Thus, one trillion trillion is a million times greater than a million trillion. Got that? So how many more water molecules than impurity molecules are there in a glass of water that is 99.9999 percent pure? A) 1000 (one thousand: 1 × 103 ) more water molecules than impurities molecules B) 1,000,000 (one million: 1 × 106 ) more water molecules than impurities molecules C) 1,000,000,000 (one billion: 1 × 109 ) more water molecules than impurities molecules D) 1,000,000,000,000,000,000 (one million trillion: 1 × 1018 ) more water molecules than impurities molecules

Environmental & Atmospheric Sciences

Pure water is a(n): a. compound

b. atom. c. ion. d. element.

Environmental & Atmospheric Sciences