The Clean Air Act of 1990 was important because it specifically
A. stated that all politicians would from then on be pro-environment.
B. detailed ways of making our air crystal clean by the year 2000.
C. required scrubbers on smokestacks of coal-fired plants.
D. punished polluters.
Answer: C
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Typically, about an hour after death, a deceased body loses heat at a rate of approximately ____ until the body reaches the environmental temeprature.
Fill in the blank(s) with correct word
Newborn humans face thermoregulatory challenges as do small mammals. One mechanism they use to generate heat is ______ in "brown fat."
A. shivering thermogenesis B. nonshivering thermogenesis C. convection D. evaporation E. radiation
Blood vessels that return blood from capillaries back to the heart are
a. arteries. b. veins. c. portal veins. d. arterioles.
Which cell type is most often used in karyotyping?
a. bone b. nerve c. epithelial d. blood e. cartilage