What is the Eustachian tube? it helps minimze sounds
helps to equalize pressure
it helps maximize sound vibrations
it helps with balance

When you run, you begin to breathe heavier and faster. your heart beats more quickly, bringing more oxygen to your cells. which organ systems are working together here?

Which statements best describe the atoms of the gas neon? check all that apply

What characteristic does giardia have that makes it a protist, a characteristic that all other protists have? a. it is a unicellular eukaryote. b. it is a eukaryote that is not an animal, a plant, or a fungus. c. it is parasitic and has flagella. d. it spends part of its time in a body of water.