Besides chemicals, cigarettes contain poisons. approximately how many poisons can be found in cigarettes?
a. 4,000
b. 3,000
c. 1,000
d. 2,000 reset selection

Which one of the following reasons is not typically why athletes strive for lower body weight and lower body fat?

Describe some of the common health conditions associated with air pollution.

Why do rna viruses appear to have higher rates of mutation? a) rna nucleotides are more unstable than dna nucleotides. b) replication of their genomes does not involve proofreading. c) rna viruses can incorporate a variety of nonstandard bases. d) rna viruses are more sensitive to mutagens.