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2 answers

the function of a filter is to seperate a substance out of another substance, and prevent it from going any further

4 materials:

sand
dirt
activated carbon
paper
glass (light)

other types:
electronic
computer
math
psychology

2006-07-07 01:33:55 · answer #1 · answered by jasonalwaysready 4 · 0 0

Filters typically are used to eliminate solids for the fluid. Filter media can be as varied as paper, cloths, man made fibers, or ever rocks and sand.

2006-07-07 10:57:32 · answer #2 · answered by Jeffrey S 6 · 0 0

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