the soil that allows water to pass through very slowly is clay
sand
percolation
Such soil or rock is 'impervious'.
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Maybe because when the water is in the soil and is going through the roots up the stem some soil particles can go in the water and travel with it.
Loose and sandy soils allow water to pass through them faster as they have larger inter-particle spaces b/w particles of soil
A paper filter will allow water to pass slowly through, leaving the soil particles behind.
A paper filter will allow water to slowly pass through, leaving the soil particles behind.
The word is porous.
A layer of rock or soil that does not allow water to pass through it .
The water stays there and forms a water table, like when you dig down in sand and reach water.