In case of drastic emergency or fallout if the us were to stand alone it would need supplies it could get on its own
Answer: central heating system
Answer:
1.B 2.A,C,D
Explanation:
A mineral is a naturally occurring, inorganic compound with a unique chemical structure and physical properties. A rock is a solid, stony mass composed of a combination of minerals or other organic compounds. For example, quartz and feldspars are minerals, but when formed together, they make a rock, granite.
The correct answer would be oceanic-continental plate boundary.
