Chemistry, 27.01.2021 05:10, alisonlebron15

Fill in the blank. 1. Minerals are substances with a fixed crystal structure and a unique chemical
composition
2. Processing ore sometimes involves or grinding minerals.
3. Prehistoric people used for knives and arrowheads.
4. The average American house contains about Mounds of minerals.
5. Early used rocks as simple tools as early as 2.6 million years ago.

Answers: 2

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