Answer: The "Eustachian tube" helps equalize the pressure within the ear.
__________________________________________
Hope this helps!
Best wishes to you!
__________________________________________
The answer is sedimentary according to Google
hope this helps!!
400x
This is high power. The lowest setting on a microscope is 40x. Each power is going by being multiplied by 10.
Answer: the law of c<span>onservation of energy.
</span>
This law applies to <span>isolated system and means that the total energy in a given frame of reference is conserved over time. Its</span><span> not created or destroyed and can only be converted from one form to another.
</span>The <span>conservation of energy can be proven by the Noether theorem.</span>
D. He has an aerator that pumps bubbles into the tank
