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Humans and the Environment

Across
The process of removing salt from water
A change or adjustment in habits or actions
A system of carrying/supplying water from one place to another
To store and use very little of so as to save as much as possible
Products brought into a country to be sold
Down
Ideal water type for growing crops
Characteristic of moving from place to place
A genetic change or adjustment to environment
The height or altitude of a place
Plants that cover a particular area
A place in the desert where there is water
A period of time with no water