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The process of taking or extracting water from a natural source (rivers, lakes, groundwater aquifers)

Acid rain

Caused by atmospheric pollution as a result of sulphur dioxide and nitrogen compounds in the air which combine with atmospheric water to form acids that fall as precipitation


The breeding, rearing, and harvesting of fish, shellfish, algae, and other organisms in all types of water environments. It is basically farming in water, rather than on land


Sections of soil and rock that hold groundwater (like rocky sponges)