The act of friction on an object
<span>The right answer is "increase". On the off chance that there's less food for them to eat,, they are going for a battle for it more on the grounds that both will need the little measures of nourishment that they scarcely get. The opposition increments.</span>
<span>neutralizes the acid
hope it helped</span>
C, or a tough layer of connective tissue surrounding a bone
