physio EX 9.0 EXERCISE 6 act 3 help!! please

For the frog heart, temperature and heart rate are _______.
    independent
    directly proportional
    controlled by homeostasis
    indirectly proportional

If the human heart were experiencing hyperthermia, what do you think would be the effect on the heart rate?
    The heart rate would increase.
    The heart rate would decrease.
    The heart rate would increase and then return to normal.
    The heart rate would not change.

Ringer's solution contains which of the following?
    anions
    cations, anions and electrolytes
    cations
    electrolytes