yes
A river increases in volume as more streams join the main flow in the lower reaches.
In a typical river, yes. But in the MAe Sa, the crops and agriculture is better further upstream.
Velocity increases in a downstream direction because more sources of water combine depth and width. A constant flow of water would result in a higher river velocity.
It won't increase BECAUSE it goes downstream. Rather, the speed of the river depends on other factors, such as how narrow the riverbed is, or on the slope.
The river Thames increases in width the further downstream you go. See related link...
Because as the river slows it deposits more than when it flows fast.
Fine silt and mud are carried further downstream than heavier rocks and gravel. Which often results in muddy banks at the river mouth.
Decrease. The source of the river is usually in a mountainous area with a steep gradient.
tributry
Downstream. The source of a river is always upstream.
the mouth of the river.?
You should position your feet facing downstream if you have capsized and are floating on your back in a swift river current.