6. A. 'government B.de'pletion C.de'forest D. po'llution
7. A. 'damage B.ef'fect C. 'fossil D. 'global
8. A. sus'tainable B. 'ecosystem C.' temperature D. 'customary
9. A. newsletter B. 'influence C. 'negative D. or'ganic
10. A. con'taminate B.in'creasingly C. psy'chology D. under'standing
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