Differing physical forces is the correct answer :)
Tertiary
Hope this helps!!!
Water Erosion
Wind Erosion
Glacier Erosion
Sea Erosion
Soil Erosion
<span>Direct election of senators to Congress occurred because of the 17th constitutional amendment.</span>
Explanation:
When a parcel of air in the atmosphere becomes saturated with water, precipitation, such as rain or snow, can fall to Earth's surface. That precipitation connects the hydrosphere with the geosphere by promoting erosion and weathering, surface processes that slowly break down large rocks into smaller ones.
<h2>I hope this answers help you :></h2>