Unit 5 Crossword Puzzle

water returning to the surface after being absorbed by the ground
a colorless, pungent gas composed of nitrogen and hydrogen from animal waste
When large amounts of nutrients enter the water and cause an increase in the amount of oxygen
when the point of the pollution is difficult to identify
officially, an ____ is any area of the marine environment that has been reserved by federal, state, tribal, territorial, or local laws or regulations to provide lasting protection for part or all of the natural and cultural resources therein
hosphorous can come from natural sources such as ___- containing rocks and human sources such as fertilizers, pesticides, detergents, and industrial wastes.
when the source of the pollutant is easily identified
a place in the aquifer where impermeable rock covers permeable rock
holds the rock layers that make up an aquifer and the water that is stored and transported through the openings in the rocks
single celled algae
the process by which water is released from plans leaves
pollution that occurs when living things decompose
chemicals used to kill weeds
when precipitation is absorbed into the ground and moves down through the soil
a water-soluble molecule made up of nitrogen and oxygen, commonly found in agricultural fertilizers
a hole that is drilled into the aquifer
a rock with many spaces between grains.
an underground water system made of porous rock and sand
an area of land over which water flows to reach a common body of water such as a lake or pond
the passage of water between reservoirs (oceans and atmosphere) by groundwater percolation, evaporation, condensation, and precipitation.