Answer: E. Is produced by "fracking", which uses high-pressure water and chemicals to make new "fractures" in the shale that allow the gas to escape to wells.
Explanation:
The Marcellus is a large area in the eastern part of the USA. Natural gas is extracted here through fracking or hydraulic fracturing. This is a process in which water at high pressure is injected into a drilled holes thereby creating holes in the rocks housing the gas and petroleum and sending them into a well
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While fracking provides natural gas, a cleaner source of energy than coal, fracking has some environmental costs such as ground water contamination and the risk of setting off earthquakes.
Fish, Arthropods, Amphibians, and Reptiles all evolved during the Paleozoic Era.
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Answer:
A relative location is the position of something relative to another landmark.
Explanation:
For example, you might say you're 50 miles west of Houston.
Answer:
by the way the pictures look and the way you feel.
Explanation:
