Question

A stream that is the source of a river.
The line where one country joins another.
The lowland between two mountains.
Route or direction of movement.​

Answer 1

Answer:

A stream that is the source of a river.

The line where one country joins another.

The lowland between two mountains.

Route or direction of movement.

Answer 2

Answer:

A stream is a body of water[1] with surface water flowing within the bed and banks of a channel. The flow of a stream is controlled by three inputs – surface water, subsurface water and groundwater. The surface and subsurface water are highly variable between periods of rainfall. Groundwater, on the other hand, has a relatively constant input and is controlled more by long-term patterns of precipitation.[2] The stream encompasses surface, subsurface and groundwater fluxes that respond to geological, geomorphological, hydrological and biotic controls