Answer:
Correct Answer:
(C) the pipe passed through a diamond-stability field and thus may contain diamonds
Explanation:
The passage from which the question was gotten is attached below:
<u>Diamonds are almost impossible to detect directly</u>
<u></u>
Diamonds are almost impossible to detect directly because they are so rare: very rich kimberlite Line pipes, the routes through which diamonds rise, may contain only three carats of diamonds per ton of kimberlite. Kimberlite begins as magma in Earth's mantle (the layer between the crust and the core).
As the magma smashes through layers of rock, it rips out debris, creating a mix of liquid and solid material. Some of the solid material it brings up may come from a so-called diamond-stability field, where conditions of pressure and temperature are conducive to the formation of diamonds.
If diamonds are to survive, though, they must shoot toward Earth's surface quickly. Otherwise, they revert to graphite or burn. Explorers seeking diamonds look for specks of indicator minerals.
Answer:
Specialization Leads to Economies of Scale
As labor is divided amongst workers, workers are able to focus on a few or even one task. The more they focus on one task, the more efficient they become at this task, which means that less time and less money is involved in producing a good.
Explanation:
Answer:
B. African National Congress
Answer: Abraham Lincoln
He known for: Abraham Lincoln is most famous for leading the country during the American Civil War. His leadership in the North helped the country to remain strong and defeat the South keeping the country united. He also pushed for the freedom of all slaves throughout the nation. He was also the first republican president.
I hope this helps you.
(This was the 16th president of the U.S.
