Answer:
Viscous Drag.
Slab-Pull Force.
Ridge-Push Force
Explanation:
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OK, its deff not the last one b/c all that trash just goes into the air, overwater farm land would kill crops (no help there), Ive never heard of heating water to kill excess bacteria. There is ,however, a new technique called Bioremediation which is the use of living organism to clean up a medium i.e. air,soil, water. It would seem the 2nd answer is correct.
This is called a life span.
.8 grams of phosphorus are recommended.