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Step2247 [10]
3 years ago
14

What consistencies/inconsistencies exist between all three types of mining?

Geography
1 answer:
Illusion [34]3 years ago
5 0

Highwall mining is often used when excavating an open-pit mine becomes too expensive. There are many advantages over underground mining, including the fact that it is both more cost-effective and involves less lead time.

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Wittaler [7]
Although all of these can be used, humidity is one I have heard the most. Temperature is a runner up, and then wind. Weather isn’t scientifically measured by rainfall or cloudiness. It is also not typically measured by sunshine.
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When a star of mass comparable to the sun dies it become a black hole?
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A dead star does indeed becomes a black hole. In fact, even the sun will turn into a giant black hole and kill us all. (That's in millions of years, so something else will wipe out the human race) 
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4 years ago
In western Utah, there are large rock formations comprised of layers of sedimentary rock limestone. Which of the following is th
hram777 [196]

Hey there! I'm happy to help!

Much of Utah used to be covered by a prehistoric body of water called <u>Lake</u> <u>Bonneville</u>. Evidences of this include fossils of trilobites and fish in Utah's mountains.

Sedimentary rocks are comprised of sediments (small bits and pieces of weathered rock), and the reason sedimentary rock formations are usually layered is because they were formed underwater. The pressure of the water compacts the rocks, and as new sediments arrive in the water, it is compacted on top of the previous compressed rock, creating layers.

Since we know that much of Utah used to be a lake, the best explanation for this sedimentary rock limestone is that A. Western Utah used to be under water (an ocean or inland sea).

Have a wonderful day and keep on learning! :D

7 0
3 years ago
What phenomenon is caused by high wind speeds and can
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Answer: I think it's Cold Front, if I'm wrong sorry

Hope this help though:)

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