precolation is something to do with water
to cause(liquid' for example) to pass through a porous substance or small holes ; fliter
so what would it be infiltation,pressure,nitrates,precolation,groundwater,or precipitation?
Percolation is a process where a liquid filters through a porous material. It is commonly used in various filtration systems to separate solids from liquids or to purify water by passing it through a porous medium. Percolation can also be seen in nature, such as the way water seeps through soil or rocks.