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Rods need much more light than do cones in order to respond.
Rock Forms
The various shapes and structures that rocks can take, including layered formations, intrusions, and extrusions.
Angular Clasts
Rock fragments with sharp edges that result from mechanical weathering processes.
Long Distance
Refers to something that is located far away or involves a great amount of space between two points or locations.
Steep Slopes
Geographic areas where the land surface angles sharply, making it prone to erosion, landslides, and difficult for certain types of vegetation to root.
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