The river is constantly flowing so that's how material moves down the river.
a. Weathering
by chucking it in the river
it indicates
exocytosis
diffusion and osmosis
"diffusion"
"diffusion"
"diffusion"
Active Transport
The process of moving materials across the cell membrane without the expenditure of energy is called passive transfer
It splashes it waves against the rock and it takes it away to a ocean or river
Gravity, rivers flow downhill
diffusion
Passive transport is the process in which dissolved materials move across a cell membrane without using a cell's energy.