Phoresy is a smaller creatures that uses larger creatures to move large distances. Altruism is the behavior where an animal puts another's needs before their own. Commensalism is a beneficial relationship for one party and nutral to the other. Mutualism is beneficial to both parties.
The answer is Altruism.
Hypothalamus.
pituitary gland.
thyroid.
parathyroids.
adrenal glands.
pineal body.
reproductive glands (depending on the sex)
pancreas.
If I answer it then its not in your own words…...
Increasing is what I think