P waves - compress and expand the ground like an accordion
<span>S waves - vibrate from</span>
Answer:
weak acid
Explanation:
pH scale is from 0 to 14
pH =7 is for water which is neutral. it is neither acidic or basic as the hydrogen ion concentration is equal to hydroxyl ion concentration.
Lesser the pH value than 7 greater the acidic nature. And greater the pH value than 7 more the basic nature.
Given pH=3-7 So the indicated interval represents weakly acidic.
That way the solution is througly dissolve
Fire, explosions, acid, fumes-take your pick here.
The fossil could get damaged and broken into smaller pieces. That is a way it could make it difficult to determine the fossils age.