A 5kg book is placed on a 2.5m high shelf how much gpe has the book gained

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.

Diagram of the evolution of land plants?

If your blood becomes too concentrated with iona, what will happen to the red blood cells