Answer
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Work Step by Step
$\textbf{Grade}$ refers to the slope or steepness of a stream channel.
A $\textbf{graded stream}$ is a watercourse with a stable slope, where the stream's energy is in equilibrium with the sediment it transports.
A stream rarely operates at a condition of grade for long because external factors constantly influence the stream's flow and sediment load. When this condition is upset, the stream responds through geomorphic adjustments.
