Which of the following statements best describes what happens to water during evaporation? a the temperature of the water increases until the water molecules react with nitrogen in he air.

b water molecules on the surface overcome intermolecular forces and change into the gas phase.

c water molecules on the surface come in contact with air molecules and are pulled into the gas phase.

d the temperature of the water increases until the water molecules separate and form oxygen and hydrogen gas.

The deserts of the sahara and australia are associated with

Drag each tile to the correct box. the body monitors the levels of oxygen in the blood to regulate breathing. isabel is running in a marathon and is near the finish line. she feels out of breath. how will her nervous system work to generate a reaction? arrange the tiles in chronological order. isabel's breathing rate increases. sensory receptors in the arteries detect low oxygen levels. the brain sends signals through motor neurons. sensory neurons generate an impulse. the central nervous system relays an impulse to certain brain regions.

Which statement is true for bacteria a. bacteria have complex internal structures b. all bacteria are spiral in shape c. all bacteria cause disease in animals d. bacteria break down some foods