Describe two examples of how human activity has affected earth’s system and how people are trying to reduce the effect of those activities.

Human activity has affected the earths system in a bad way. First of all, we have air pollution because of all the factories we have. Another thing is that we have waste on land and oceans because of human activity. Though, there are groups created to stop bad human activity. Even some people try to not make much waste as they can by using items that are reusable

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.

How many miles is each lap?