Answer:
B. Corundum
Explanation:
Using the Mohs scale of hardness, the mineral has a hardness greater than 6.5 (Steel nail) but less than 8.5 (Drill bit). The corundum has a hardness of 9.0, which means it cannot be scratched by a drill bit, but all the other choices have a hardness scale less than 6.5 but the mineral was not scratched by the nail. So the best answer would be B.
Mid ocean ridges usually form where tectonic plates are <span>diverging.
</span><span>diverging means to separate in a different direction. </span>
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Answer:
If the results of an experiment are considered valid, they will give the same outcome when repeated.
Explanation:
- Validity in a sense reflects the correctness of the experiment. So if any conducted experiment has the correct conclusion then it must be same and true for same experiment done by any person around the world in right manner.
- So as higher the validity of the experiment is, higher is the correctness of that conclusion. For the fully valid statement, it must be same and true when repeated by different scientists.
Answer:
population A
Explanation:
because, it starts at 1 so it starts when the first person started the population, and it has a constant rate of change
