What percentage of cancer deaths are related to smoking?
a. 20%
b. 30%
c. 40%
d. 50%

Albert badura and b. f skinner agree that cognitive factors play no role in personality development. true or false

True or false a fertilized cell divides many times to form an embryo

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.