Mudslides, landslides, and rock slides can cause material to move downhill due to the force of gravity.
when it causes material to move to a new location, gravity is acting as a force of
erosion.
weathering.
mountain building.
temperature change.

Tori is researching for her blog post about how wearing sunblock can prevent skin cancer, and she finds a page about her topic on the united states centers for disease control website at is this a reliable site for tori’s research? yes, because it is presented by a college or university no, because it is a personal opinion about the subject yes, because it is run by a governmental organization no, because it is intended to advertise a certain product