A. contaminate A. meaning A. protection A. biodiversity A. book A. gorilla = A. tortoise = A. identify = A. extreme 0: A. discuss 1: A. pesticide B. deforest B. greater B. control B. climate B. look B. environment B. ecosystem B. practical B. excellent B. issue B. impact C. pollute C. heatwave C. pollution C. gorilla C. flood C. consequence C. biodiversity C. habitat C. execute C. fossil C. focus D. protect D. clearing D. forest D. giant D. good D. respiratory D. promotion D. respiratory D. exercise D. D. practical classroom