Collect some pond water or muddy water. Try out a way to obtain clear water from the pond or muddy water. Give a step-by-step description of your method in a flowchart.
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sedimentation-the heavier dirt settles.
decantation-the heavier dirt is taken out.
filteration-use filter paper to remove fine dirts.
air exposal-kills bacteria.
decantation-the heavier dirt is taken out.
filteration-use filter paper to remove fine dirts.
air exposal-kills bacteria.
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