I don't know exactly what you mean but the size of a group affects its defense because there is a larger group. Therefore, more people would be protecting it, adding more to its defense.
I believe a valley or mountain, but I am not 100 percent sure.
D for sure. Just like how the ground rises over millions of years.
Minerals are naturally-formed substances that have a specific chemical properties: abiogenic (minerals are not produced by or derived from living organisms, non-organic in origin), stable at room temperature (i.e. at 25 degrees C)
, are represented by a known chemical formula
, have an ordered atomic arrangement/structure. Coal is not classified as a mineral because it is an organic substance. Correct answer: D (coal is formed from the remains of dead plants and animals).