Level 2
Level 1

The natural world -1


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aquatic
living in the water
array
a large number , a collection
defense
protection or support against attack, criticism, or infection
deforestation
the removal of all trees from a large area
environment
external conditions or surroundings, esp those in which people live or work
erosion
loss of soil from action of water or wind
extend
to get bigger or to make something last longer
fell
to cut down a tree
habitat
the natural area in which an animal or plant usually lives
impact
a strong effect , the action of one object hitting another
intercept
to catch something or someone before they are able to reach a particular place
logging
the cutting down of trees for commercial purpose
myriad
of an indefinitely great number
nutrient
food , any substance that plants or animals need in order to live and grow
pollution
damage caused to water, air, etc
degenerate
to become worse
vital
extremely important