Match the following words with their meaning. 1. demilitarized
a type of automotive fuel that uses plant oils rather than petroleum
2. encroachment
water that is pure or clean enough to drink
3. topography
the natural geographic features of a place or region
4. arable
land that is suitable for farming
5. biodiesel
an area between two nations where no military activity is allowed
6. potable
to gradually expand or intrude into a region or person's property

and
Match the following words with their meaning.

1. chronic
constant, nonstop effects as in a noise or illness
2. divert
something found or living under an ocean or sea
3. alluvium
to change the direction of something, e. g., a government or river
4. convergence
the site where two rivers meet
5. delta
a broad, triangular shaped land area at the mouth of a river
6. submarine
sediment (mud, rocks, soil) deposited by flowing rivers or streams