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can be broken down, in a reasonable amount of time, into its base compounds by micro-organisms and other living things.
the process of removing salt and other minerals from seawater, to make it drinkable.
the main force responsible for the upwards movement of water in the xylem.
a group or category in the biological classification system (the plural of taxon is taxa).
a form of environmentally-friendly farming in which farmland and soil are cared for so that it...