Choose the term that represents one of the body's defense mechanisms.
a. chemical
b. declining
c. acute
d. convalescent

One does not belong why? ice, gold ,wood ,diamond and table salt

A50.0g sample of liquid water at 0.0 c ends up as ice at -20.0 c. how much energy is involved in this change?

Clyde and marilyn are riding a roller coaster. during which section(s) of the track is their potential energy converted to kinetic energy? a. from point b to point c only b. from point b to point d only c. from point a to point b only d. from point a to point b and from point c to point d