Too little water concentrated in cells may make a person dehydrated. Being dehydrated may cause painful headaches and confusion. Which hormone and organ regulate water concentration?

pancreas and ADH

pituitary and glucagon

kidney and ADH

pituitary and ADH

Which statement correctly describes other ways in which nebulae and stars are different? a. a star always has a higher density than a nebula. b. stars can form inside a nebula but a nebula can never be produced by any star. c. stars can never form inside a nebula but a nebula can be produced by any star. d. a nebula always has a higher density than a star. reset submit