Natural ProcessesNatural processes are happening every day. Over time these processes can cause changes to the Earth’s surface such as erosion and weathering. Some changes are sudden like those caused by volcanic eruptions or earth quakes.
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Human ActivitiesMany activities that we do daily have an effect on the environment. These effects can be positive or negative on the Earth’s surface. Some of these activities can also cause natural processes to change or worsen and have a greater effect on the Earth’s surface.
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