Which statement about tobacco use is true? A.
Smokeless tobacco can lead to cancer but is not addictive.
B.
Smoking relaxes people because it lowers the heart rate.
C.
Smoking can lead to emphysema as well as strokes.

Which set of symptoms describes the short term effects of marijuana

4. decision trees are organized through a series of choose one answer. a. tiers b. the cut/dry method invented by the university of madagascar c. disorganized webs

What is the function of reverse transcriptase in retroviruses? a) it uses viral rna as a template for dna synthesis. b) it converts host cell rna into viral dna. c) it translates viral rna into proteins. d) it uses viral rna as a template for making complementary rna strands.