One of the natural influences on the concentrations of atmospheric ozone is ________

What will be an ideal response?


Answer: sunspot cycles, volcanic debris, or oscillation of the stratosphere

Environmental & Atmospheric Sciences

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Poor countries do not have the opportunity to sell food products to rich countries because

A) the quality of their produce does not meet the standards set by rich countries. B) the rich countries have erected tariff walls to close their markets of food imports from poor countries. C) they hardly have the capability to produce sufficient food for themselves. D) the types of food grown in poor countries are alien to the tastes found in rich countries. E) poor countries would not know how to use the foreign exchange they received in such an enterprise.

Environmental & Atmospheric Sciences

PPP in GNI PPP accounts for:

A) petroleum exports B) how much a person's income can really buy C) life expectancy D) gender inequality

Environmental & Atmospheric Sciences

The widespread distribution of soccer globally may be attributed in large part to

A) individual and isolated parallel developments of the sport. B) the introduction of the internet. C) the colonial reach of the British Empire. D) nomadic relocation. E) the introduction of Facebook.

Environmental & Atmospheric Sciences

What mineral property is illustrated by this image?

A. crystal form B. luster C. cleavage D. color

Environmental & Atmospheric Sciences