题目内容
Streamline is a line of flow. It is an actual line connecting a series of fluid particles in a moving fluid so that, at a given instant, the velocity vector of every particle on that line is tangent to it.
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When precipitation falls, water may not immediately soak in, run off, or evaporate.
The hydrologic cycle is off-balance because more liquid is brought in via comets and meteorites each year.
What describes the path water takes as it moves between the land, the ocean, and the atmosphere?
Frost action will make a slope less stable.
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