Answer:
The difference between a mineral and a rock is (C) A rock is generally made up of an aggregate of minerals, but this is not a requirement. Rocks can also be made up of non-mineral matter.
Explanation:
What are the options if there are options?
Answer:
it should be the A. the crust
Answer:
Currently (2016), if there is a false start, they are signalled by firing the starting gun twice. The race is stopped and the offending athletes are immediately disqualified.
