When one hormone is needed for a second hormone to produce an effect, it is called?

What is an animal that lives by preying on other animals

Matthew decided he wanted to hike up mount everest. on his way to the top, it began to snow and the temperature dropped to -10°f. matthew forgot to wear a heavy jacket so his body began to shiver beyond control. in this case, matthew's body shivering is the to a drop in temperature. * 0 points reflex stimuli responce environmental facto

Match the description of each organism to the appropriate category