What is the scientific name for the highest level of the earth's atmosphere? ?

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.

2. x2 + 8x + 12 = 0 to prove: x = -6 or x = -2

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