Answer:
After the wastewater is purified it is pumped into the ground to mix with aquifer water. Sometimes the treated water is used to form a barrier against invading seawater on groundwater. The purified water trickles down to replenish the groundwater supply.
Explanation:\
I hope that helps. I don't know if this is right or wrong, but good luck :)
Answer:
Geological time scale is the arrangement of major divisions of geological time into eras, periods and epochs on the time scale.
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Mutation always creates a stop codon
The birds staying in one solid group formation would pose problematic; as well as the variable "stragglers" that might be astray from the flock. solution: perhaps try to count the birds while they have landed for water or food, example: lake, stream, etc..
Answer:
The chemical feature of each group is: native elements – only one element; silicates – silica tetrahedron; phosphates – phosphate tetrahedron; carbonates – one carbon atom with three oxygen atoms; halides – a halogen bonded with a metallic atom; oxides – a metal combined with oxygen; sulfates – sulfur and oxygen