What live part of their lives in water and part on land

Which of the following is a possible reason for sleep? a) growth b)digestive c)speed d)intelligence

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.

This connective tissue consists of large round densely packed cells with the nucleus pushed to one side.