________ and ________ are chemical weathering products created in many metal and coal mining regions and pose serious environmental hazards
A) Carbonic acid; slag
B) Nitric acid; coal dust
C) Hydrochloric acid; bicarbonate
D) Sulfuric acid; iron oxide
Answer: D
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Earth’s ocean and sea divisions, such as the Pacific and Atlantic Oceans, are but temporary features of a(n)
____________ world ocean. Fill in the blank(s) with the appropriate word(s).
What is perestroika?
A) greater openness, a policy in the 1980s that encouraged several republics to demand independence B) planned economic restructuring, an early move toward a freer market C) a policy of education improvement, in the last days of the former Soviet Union D) the Russian word for railroad E) a type of permafrost found around Glasgow
The higher the Air Quality Index, the better the quality of the air
Indicate whether the statement is true or false
The Linnaean system of classification is ________
Fill in the blank(s) with the appropriate word(s).