*BLANK* more cases of skin cancer are caused by using tanning beds than cases of lung cancer
resulting from smoking.
About *BLANK* of adolescents and *BLANK* of college
students have used tanning beds.


1. 90,00 and 360,000 or 450,000

2. 19% and 35% or 55%

3. 19% and 35% or 55%

Which a hammer strikes a compound formed by covalent bounds

Send sperm live for about 48 hours after ejaculation and ovum for only 24 hours after ovulation intercourse can occur after ovulation for fertilization to occur

Investigator a has biological specimens that are coded and linked to identifiers of the source individuals. investigator a provides the specimens to investigator b but does not provide the individual identifiers. investigator b agrees not to re-identify the source individuals. is investigator b's research using the biospecimens human subjects research according to the definition of human subjects research in the federal regulations?