1. minerals are naturally occurring, 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 pounds of minerals.
5. early used rocks as simple tools as early as 2.6 million years ago.

1.) naturally occurring

2.) crushing

3.) flint

4.) 250,000

5.) hominids

answer would be letter choice (a),   a ball resting on a shelf. would be another example of potential energy   >   stored energy > not moving.

a ball spinning on a finger   >   kinetic energy > moving energy

a ball rolling on the ground   >   kinetic energy   > moving energy

a   ball flying through the air   > kinetic energy   >   moving energy

hope that                                         : )

first thing first of the answer is with technology. second thing second thing is that the big bang theory did not happened u see they say it did but what they dont realize is that like dinasures are still a round they might deny it but they and look at these 12 foot human skelteons they find lets see didnt the bible say something about giants. hope this peace.