Down syndrome is the result of
a) environmental insult, usually during the birth process.
b) a recessive-gene disease.
c) a specific chromosomal abnormality.
d) none of the above.
Question 2
What is one similarity shared by cocaine and heroin?
a) They are physically addictive.
b) They originally had a benign image.
c) They were once ingredients in soda pop.
d) They increase bodily activity and reactivity.