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Unit 11 D


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preservation
the act of keeping something alive or in existence
downside
negative aspect
upside
positive aspect
dismiss
reject or disregard
kill off
put an end to; extinguish
revival
an instance of something becoming popular, active, or important again.
extinct
(of a species, family or group) having no living members left
exposure to
contact with
growth
development; gradual increase
since
because
due to
because of
consequently
as a result
therefore
as a result