A. conservative
B. conservation
C. conserve
D. conservable
A. since
B. for
C. after
D. until
A. a-A
B. the-The
C. a-The
D. an-An
A. is
B. was
C. were
D. had been
A. representative
B. complicated
C. traditional
D. memorial
A. role
B. section
C. act
D. area
A. on
B. over
C. for
D. with
A. win
B. will win
C. won
D. is going to win
A. Distribution
B. Elimination
C. Destruction
D. Pollution
A. unexpected
B. quickly
C. slowly
D. remarkably
A. 20 million hectares
B. 10 million hectares
C. 30 million hectares
D. 40 million hectares
A. medicine and industry
B. humans
C. sorts of plants
D. tropical forests
A. provide
B. cover
C. help
D. compensate
A. They supply us with many sorts of plants.
B. They keep water clean and slow down the Greenhouse Effect.
C. They reduce the erosion.
D. They reduce floods and droughts
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