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conservation the protection of animals, plants and natural resources
ecosystem everything that exist in a particular environment
watershed the area of land that includes a particular river or lake and all the rivers and streams...
biomass plant material and animal waste used especially as a source of fuel; amount of living matter
levees an embankment for preventing flooding
nonsense words or ideas that are foolish or untrue
nonacademic not related to school or learning
autograph the signature of a famous person
graphic relating to the artist use of pictures shapes or words especially in books or magazines
telegraph an old fashion system of sending messages over long distances using wires and electric signals