Question

the steepness of a slope, expressed as a vertical drop over a specific distance. tributary creep meander gradient

Explanation:

• A tributary is a stream that flows into a larger stream or river.
• Creep is the slow, gradual movement of soil or sediment down a slope.
• A meander is a bend or curve in a river.
• Gradient is defined as the steepness of a slope, calculated as the vertical drop over a specific horizontal distance.

Answer:

gradient