Rock layers form when settlements build up over time they usually have to go through pressure and compaction/cementation before this happens
Volcanic activity, earthquakes along with wind, water and ice erode the land and the landscape dramatically and consistently cause the earth’s surface to be re-shaped and renewed.
Conventional oil and gas occur in typical geologic traps near the earth's surface within porous sedimentary rocks, whereas unconventional oil and gas occur in<u> shale</u> rock thousands of feet below the surface.
In the field of geography, such a kind of oil or gas that can be pulled from the ground through pumps is referred to as conventional oil and gas. On the other hand, such a kind of oil or gas that cannot be pulled by traditional methods and are difficult to be extracted is referred to as unconventional oil and gas.
Conventional oil and gas are easier to be pumped because they are extracted from sedimentary rocks that are porous and are present near the surface of the earth.
On the other hand, unconventional oil and gas are present in the shale rocks that are neither much porous and also are buried deep in the surface.
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One reason that the population has grown in the past 100 years is because back in the day we did not have birth control. These days there are so many types of ways to kill your child in the womb. Now that there are more people living on this earth people have to find different places to live. people are living in dangerous places just to survive.