Approximately 9 million childhood lead poisonings were prevented in the United States between 1976 and 2007 primarily because of
a. a ban on the use of lead-based paints and leaded gasoline
b. a ban on the use of lead in car batteries
c. a ban on the use of lead in pencils
d. a ban on the use of transfused blood contaminated with lead
e. all of these answers
A
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Fertilizer use is least common in
A) Africa. B) the United States. C) Europe. D) Asia.
What is an economic decision-making tool that involves determining who/what may be affected, projecting outcomes, and then establishing who benefits or who is harmed?
A. existence value B. monetary value C. discount value D. nonuse value E. cost benefit analysis
The term "mass wasting" refers to the improper use of Earth materials in a manner that is in conflict with the principles of conservation and environmental stewardship.
Answer the following statement true (T) or false (F)
What almost always represents the surface of the lithosphere?
A. regolith B. bedrock C. soil D. crust E. pedogenesis