A fast-moving stream cannot be made of cells.
A fast-moving stream would be made of molecules of water that are in motion or flowing in a particular direction.
Cells, on the other hand, are the fundamental and basic unit of living organisms. Living cells are able to carry out important life processes such as respiration, reproduction, excretion, etc. unlike molecules of water.
Molecules of water are non-living and cannot carry out life processes like living cells.
More on cells can be found here: https://brainly.com/question/5763151
