The speed of light
changes as it goes
through different
mediums. what does
this cause?
a. it causes light to change
direction or appear "bent".
b. it causes light to bend at right
angles.
2
c. it causes light to stop
traveling.
d. it causes light to move
backwards.

How many variables are altered in a good experiment? a.1 b.0 c.2 d.3

What are two ways in which waves erode the land?

Duchenne muscular dystrophy is a serious condition caused by a recessive allele of a gene on the human x chromosome. the patients have muscles that weaken over time because they have absent or decreased dystrophin, a muscle protein. they rarely live past their twenties. how likely is it for a woman to have this condition? a) women can never have this condition.b) one-fourth of the daughters of an affected man would have this condition.c) one-half of the daughters of an affected father and a carrier mother could have this condition.d) only if a woman is xxx could she have this condition.