What are the 3 fossil fuels and how are they formed? - The 3 fossil fuels are coal, oil, and natural gas. Coal was formed in swamps when plant died then changed to peat then to lignite. Oil and gas were formed in the sea or ocean when microscopic plants and animals died and became buried under sediment layers on the ocean floor. All 3 fossil fuels took millions of years to form under layers of compaction, heat, and minerals from water., What are the five landforms that we learned and how are they formed? - Sand dunes are the result of deposition of sediments by wind. Canyons are the result of erosion of sediments by water. U-shaped valleys are the result of erosion of sediments by ice. Deltas are the result of deposition of sediments by water.,

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