Between 1960 and 2010, the total amount of recycled MSW in the U.S. has

A) actually declined by about 10%, a very disappointing trend.
B) stayed about the same, as the cost of natural resources had declined.
C) actually doubled, representing significant improvement.
D) increased by more than 500%, representing a huge improvement.


D

Environmental & Atmospheric Sciences

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What is the effect of a warm global climate on chemical weathering, and what is its feedback to global climate?

A. A warm climate increases chemical weathering and the formation of limestone, increasing CO2 levels, which in turn warms the climate more. B. A warm climate increases chemical weathering and the formation of limestone, drawing down CO2 levels, which in turn cools climate. C. A warm climate decreases chemical weathering and the formation of limestone, drawing down CO2 levels, which in turn cools climate. D. A warm climate decreases chemical weathering and the formation of limestone, increasing CO2 levels, which in turn warms the climate more.

Environmental & Atmospheric Sciences

During elongation how many of the general transcription factors remain bound to the TATA box?

A) 0 B) 1 C) 2 D) 3

Environmental & Atmospheric Sciences

________ of urban residents in developing countries have satisfactory sanitation services.

A. Less than 10 percent B. Nearly all C. Less than half D. 70-80 percent

Environmental & Atmospheric Sciences

High-frequency sound emits a high

A. amplitude. B. pitch. C. speed. D. all of the above

Environmental & Atmospheric Sciences