Which water sources contribute to a river system? check all that apply.

groundwater
lakes
rivers
streams
watersheds

Explanation:

Larger networks of streams, lakes, rivers etc describe the river system as there are all part of a river's network.

Rivers, streams, and ground water move across the land and thus they contribute to the river system. Whereas a lake is defined as a large area of water which is surrounded by land and does not really contribute to river system.

Therefore, we can conclude that groundwater, rivers, and streams are the water sources that contribute to a river system.

the movement of aircraft through clouds can even cause lightning strikes. a single lightning event is a "flash", which is a complex, multi-stage explosively ejected.

explanation:

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a pan containing water is placed in a positio n where it is exposed to a 10 mile per hour wind. the pan contains a uniform depth of 1.27 cm of water, is quite wide, and has a length of 2.44 m in the wind direction. the water in the pan is at a constant temperature of 15.5 °c.