Oil Coal and Natural Gas are the fossil fuels the USA has the most reserves of. Given that only one of them is on the answers Coal is the correct answer.
Answer:
a steep temperature gradient in a body of water such as a lake, marked by a layer above and below which the water is at different temperatures.
Explanation:
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The rock erodes over time and creates soft, supple material which we refer to as soil
Erosion of sand n dirt and it ca cause sinkholes
