You are studying a population of predatory birds that have an average talon length of 3.8 cm, but whose total variation in talon length spans from 1.8 to 5.8 cm. You continue to study the population and see that the average talon length does not change, but variation in talon length now spans from 2.3 to 5.5 cm. This is an example of:.

Why is excretion necessary to maintain homeostasis?

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.

When lactate builds up in a runners muscles it causes a burning sensation what causes this to occur