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MEDIUMENGLISHAgriculture

Tropical rain forests are:

AThe most valuable and the richest ecosystems on earth

BThey play a critical pat in the earth’s life support systems and house 50% and possibly as much as 90% of all the species on earth

CThey are a key storehouse of foods, oils and minerals and source of ingredients that make up a range of medical treatments

DAll of the above

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