Which of the following are classified as heavy metals?
A) carbon, hydrogen, oxygen
B) aluminum, iron, silicon
C) nitrogen, phosphorus, potassium
D) lead, mercury, cadmium
E) any nonbiodegradable materials
D
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Which of the following is a middle-level cloud type?
A) cirrostratus B) stratocumulus C) cumulonimbus D) altostratus
Which district in the North American Manufacturing Belt has a number of its cities located along the Erie Canal?
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
Compare the environmental effects of coal and uranium as power sources
What will be an ideal response?
developed the theory of biological evolution
What will be an ideal response?