Pressure varies in the atmosphere because air molecules are being pulled down towards the center of the earth-hope this helps!
Probably the kinetic energy of rubbing the pump against the valve, combined with the increase in gas pressure in the tire itself.
Answer:
I believe the answer is "b". "During the experiment, the scientist has only one element, or variable, that is changed to test the hypothesis."
Explanation:
I remember from last year but I'm not totally sure. Good luck!
And a water molecule, this is called a dehydration synthesis. when 2 molecule combine, a water molecule leave.
Answer:
The answer to your question is: solvent
Explanation:
Solvent is a component in a solution that is present in the highest amount and is able to dissolve the other or others components.
