Which district in the North American Manufacturing Belt is in the oldest steel producing region?
A) the central New York and Mohawk River valley
B) Western Great Lakes, running from Detroit to Chicago
C) Pittsburgh-Cleveland-Erie
D) Middle Atlantic, including metropolitan New York
E) southern New England, especially Boston
C
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The scientific method is the way in which scientists gather data and formulate and test hypotheses, models, theories, and laws.
Answer the following statement true (T) or false (F)
When lightning strikes, nitrogen molecules, N2, and oxygen molecules, O2, in the air react to form nitrates, NO3-, which come down in the rain to help fertilize the soil. Is this an example of oxidation or reduction?
A. The formation of nitrates is an example of reduction. B. The formation of nitrates is an example of oxidation. C. Both. The nitrogen is oxidized as it reacts with the oxygen while the oxygen is reduced. D. Neither. Although the bonds of both the N2 and O2 molecules are broken to form the NO3-, neither oxidation nor reduction occurs.
Recycling aluminum is particularly beneficial because it
A) saves energy. B) creates jobs in the country that recycles. C) decreases the need to import virgin aluminum ore. D) saves energy, creates jobs, and decreases imports of virgin aluminum ore.
How many channels are found in complex III of the electron and H+ transport chain?
A) 1 B) 2 C) 3 D) 4