Answer:
Before mountain building occurred, the area was underwater.
Explanation:
Through excavation, fossils that are of marine animals are often found high on mountain ranges. This seems weird from today's perspective, as marine animals can only be found in ocean waters, and there is no way they can travel on land and upon the mountains. Earth has changed a lot throughout history though, so such occurances are actually not that weird.
The mountains in Pennsylvania are such a place, with an abundance of marine fossils. When we look at the geological past of what is now Pennsylvania we can easily see why this is the case. The whole area was actually underwater for millions of years. This was the case before mountain building occurred here when part of the ocean floor raised high above the surface of the water and created land. As the crust was going up, the fossils on it went up as well.
<h2>This is not beautiful</h2><h3>The picture in attachment is beautiful...</h3>
Flooding because of dam failures, subsidence, etc. are secondary effects, whereas shaking of structures, liquefaction, etc. by faulting are direct damage.
<h3>What are secondary catastrophic effects?</h3>
Secondary effects are indirectly associated with the occurrence of a catastrophic event (in this case, a earthquake).
Moreover, direct damage makes reference to eventual immediate effects that such catastrophic events may have.
In conclusion, flooding because of dam failures, subsidence, etc. are secondary effects, whereas shaking of structures, liquefaction, etc. by faulting are direct damage.
Learn more about immediate catastrophic effects here:
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Answer:
The natural gas is used more often because it is much more environmentally friendly.
Explanation:
Most of the world, in order to produce energy for whatever purpose, mostly relies on usage of fossil fuels. The fossil fuels that are the most dominant when it comes to usage are unfortunatelly the ones that cause the most pollution. Those two fossil fuels are the coal and oil. There is another fossil fuels though that has always been in the background but is gradually becoming more and more popular.
The fossil fuel that starts to gain more ground is the natural gas. The natural gas is relatively abundant, easy for usage, transportation, and economically justifiable. What is also very important and gives it an advantage lately is the fact that the pollution form it is uncompearably lower, in fact, the methane that is released from the natural gas only does so because of leaks during its transportation.
