Answer:
a) Addition reaction, is your answer
The Large intestine absorbs water and vitamin K from digested food.
Crush the limestone... it would give more area for the acid to react
A physical change is any change in a substances form that does not change its chemical makeup. Examples of physical changes are breaking a stick or melting ice. A chemical change occurs when atoms of a substance are rearranged, and the bonds between the atoms are broken or formed. HOPE THIS HELPS!!