The cleaner wrasse, a small marine fish, periodically cleans harmful parasites from the mouth
and body of the moray eel. The moray, in turn, protects the wrasse from larger predators and
it with a constant supply of food. This is an example of what type of relationship?

What sentence best supports the statement that hormones are involved in the regulation of homeostasis? a. the hormone erythropoeitin increases the production of red blood cells when oxygen levels are low. b. the hormone oxytocin promotes labor contractions of the uterus during childbirth. c. the hormone melatonin induces sleep and its production is slowed by exposure to light. d. the hormone cortisol suppresses the immune system and is produced when the body is under stress.

Number and variety of living organisms includes genetic, species, and ecological types

What are the three types of counseling established by marine corps policy?