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THE WATER CYCLE - Mustang Public Schools
www.mustangps.orgTHE WATER CYCLE Water is the most abundant substance in living things. The human body, ... which make up the cell membranes. The main reservoir if phosphorus is rock and soil, so the cycle may begin ... WATER, CARBON, NITROGEN AND PHOSPHORUS CYCLE WORKSHEET THE WATER CYCLE 1. Name three important needs for water.