Ageologist in south dakota finds an assemblage of dinosaur bones in an outcrop for the hilltown formation, and his colleague in china discovers an assemblage of bones from a different dinosaur in the liaoning formation. what can be said about the two formations? they are the exact same age. they are no older than jurassic. they are no younger than triassic in age. they are no younger than cretaceous in age.

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.