Because carry out all the functions in the human body necessary for living. Proteins make up hormones that are required for living. Insulin - responsible for stabilising blood sugar. Haemoglobin - responsible for carrying oxygen around the body. Melatonin - responsible for helping us get to sleep. Adrenalin - responsible for the flight-fight-freeze response. There are many more but here are just a few.
I think the answer is 2 or 3
Instinct is an inherent behavior; a fixed action pattern that is unlearned. Animals are born with certain instincts which are common to all those in their breed. Some instinctual behaviors require a certain amount of maturation before they begin. The most obvious one is the instinct to mate and propagate.______ This should be the answers. Good luck
Leukocytes
Hope that helped, Good luck! (:<span />
