1)a dog pants because
a) evaporation causes cooling
b)evaporation gets rid of excess water in the body
c)it is tired
d)painted to raise body temperature
2) which is necessary for a feedback mechanism
a)control unit
b)effector
c)sensor
d)all of these
3)in moist soil, terry the ameba absorbs as much water from its surrounding as diffuses out of its cell this is an example of
a)homestasis
b)dynamic equilibrium
c) thermoregulation
d)feedback