The thin, outer layer of Earth, from 7 to 40 km in thickness, is called the ________

Fill in the blank(s) with correct word


crust

Environmental & Atmospheric Sciences

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In the wake of the U.S. failure to ratify the Kyoto Protocol ________

A) cities and states are setting their own programs for reducing greenhouse gas emissions B) many nations have severed diplomatic relations with the United States C) oil exporting nations have refused to sell to the United States D) dozens of other nations pulled out of the Protocol E) the United States has shown that it is a leader in carbon emission reduction without having signed the Protocol

Environmental & Atmospheric Sciences

The ecological footprint of a large city is ________ than/as the surrounding rural area

A) much higher B) about the same size C) slightly lower D) slightly higher E) much lower

Environmental & Atmospheric Sciences

The diffusion of social media has threatened

A) popular culture and folk culture relatively equally. B) the folk customs of only a few isolated communities. C) the spread of the international banking system. D) folk culture more than popular culture. E) folk culture, but only in the largest cities on each continent.

Environmental & Atmospheric Sciences

Which of the following compounds is used as an antacid?

A) NaHCO3 B) NaNO3 C) Na3PO4 D) Na2SO4

Environmental & Atmospheric Sciences