About 1.5 million Americans get sick annually from fecal contamination producing large health costs. Preventive measures would cost
A. slightly more.
B. about the same.
C. less.
D. much more.
Answer: C
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A landmass in the Precambrian made up of North America, Greenland, parts of northwestern
Scotland, and perhaps some of the Baltic shield of Scandinavia:a. Gondwana d. Pangaea b. Laurentia e. Antarctica c. Rodinia
Suppose you are told that the area where you lived was once a shallow sea that evaporated. What kind of rock are you most likely to find that is related to that time?
A. Clastic B. Biochemical C. Chemical
Oceans and land surface are distributed evenly on the Earth
Indicate whether the statement is true or false
The green flash is largely an example of the ____ of light by Earth's atmosphere
a. ?refraction b. ?reflection c. ?absorption d. ?diffraction e. ?transmission