The earth is surrounded by a layer of gases called the atmosphere. The atmosphere is very important to life on Earth and does many things to help protect life and help life to survive. A Big Blanket. The atmosphere protects Earth like a big blanket of insulation.
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1 For a passenger car, CostHelper readers report paying $179-$942 to replace the timing belt, at an average cost of $449. 2  For an SUV or minivan, CostHelper readers report paying $502-$950, with an average of $736.