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Unit-17
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unspoiled
pristine
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the number and types of plants and animals that exist in a particular area or in the world generally, or the problem of protecting this:
biodiversity
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Two similar words with unlikely
improbable, questionable, doubtful
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Two similar words with useful
beneficial, worthwhile, advantages
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Two words same as problem
dilemma, challenge, difficulty, obstacle
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Two similar words with possible
conceivable, feasible, viable, achievable
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persistent
chronic
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the number and types of plants and animals that exist in a particular area or in the world generally, or the problem of protecting this:
biodiversity
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unaffected
immune
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unparalleled
unprecedented
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Two similar words with useless
pointless, futile, fruitless
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extremely harmful
devastating
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challenging
taxing
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crucial
vital
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Two similar words with impossible
unattainable, impracticable, unfeasible
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omnipresent
pervasive
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Two words same as change
acclimatise, adapt, amend, linger, modify, transform
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Two similar words with likely
liable, probable
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Two words same as worsen
compound, deteriorate, enhance, exacerbate
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