Fall line
提供: 広島大学デジタル博物館
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fall line
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Definition
Glossary of "Environmental Science: Earth as a Living Planet (2nd ed.)" by Botkin & Keller (1998)
- The point on a rive where there is an abrupt drop in elevation of the land and where numerous waterfalls occur. The line is typically located where streams pass from harder to softer rocks.