Answer:You didn't provide examples
Explanation: Groundwater can cause erosion under the surface as it moves through the soil. During the movement an acid is formed which what causes erosion and deposition.
Hope that helps
Answer:
ok and thank you for free point
Answer:
mixture of atoms forms molecule
Covalent example ch4 where carbon is covalently bonded with all 4 hydrogens
Density is a physical property. It's measured and doesn't change the object chemically.
