Amelia has observed water run off into the ocean in many places and for many years. The level of the water in the ocean does not seem to have changed. Why?
A. Water evaporates from the ocean's surface.
B. Some ocean water freezes and becomes glaciers.
C. Salt makes ocean water heavier so it takes up less space.
D. Water seeps into the ocean bed and becomes ground water.

Drag each tile to the correct box. match the given symbol or molecular formula to the term that best describes it. element -organic compound -inorganic elemental molecule -inorganic compound -answers given: so2, k, ci2, c6h6

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.

What organ systems are working to you cool down after a workout?