Maybe A, B, and D, this could be wrong but my best guesstimate
Answer:
Evidence
Explanation: You would have more evidence to prove a point, which makes an idea valid.
The answer is C because it is an example of evolution or adaption.
Answer:
color, streak, hardness, luster, diaphaneity, specific gravity, cleavage, fracture, magnetism, solubility
Explanation:
These physical properties are useful for identifying minerals. However, they are much more important in determining the potential industrial uses of the mineral.