Answer: Probably, harder the mineral it scratches. It makes more sense.
Answer:
Water
Explanation:
Water is essential to human life. Hence, human settlements tend to crop up near water sources such as rivers. This is particularly evidence in Africa, which has many quite dry regions.
The two most densely populated European nations are England, with 407 people per square kilometer, and The Netherlands, with 397<span> people per square kilometer.</span>
Water and wind because they can shape different natural feautures. So water
