During the revolution of the 18th and 19th centuries, europe underwent major developments in industry.

During the Industrial Revolution of the 18th and 19th centuries, Europe underwent major developments in industry. It was when a lot of new machinery and products were made.

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Geothermic gradient is the rate of increasing temperature with respect to increasing the depth in the earths interior. away from tech tonic plates boundaries, it is about 25-40 c/km (72-87 degrees f/mi) of depth near the surface in most of the world.

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