Using blood tests and statistical sampling, medical researchers at New York City's Mount Sinai School of Medicine found that it is likely that nearly every person on the earth has detectable levels of ____ in their bodies.
A. hazardous chemicals
B. carcinogens
C. petrochemicals
D. DDT
E. persistent organic pollutants (POPs)
Answer: E
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Geologists Vine, Matthews and Morley found striking similarities and symmetry in the pattern of _____ in rocks on opposite sides of ocean ridges.
A ) mineralization B ) density C ) gravity D ) magnetic residue
Biomes are regions with similar ________
A) animals, plants, and climatic conditions B) rocks, soil, minerals, and water C) terrain and elevations D) soils, water systems, and animals
Where is earthquake damage generally the greatest?
A. California B. Alaska C. in the Rockies
Which of the following is true of the alcohol functional groups in 2-methyl-1,2-propanediol?
A) One is primary and one is secondary. B) One is primary and one is tertiary. C) Both are primary. D) Neither is primary.