omplete the sentences with the correct form of the words given. 24.How can I personally help to protect animals in danger of ____________? (extinct) 25.The success of the nature reserve really is a huge ____________. (achieve) 26.Some chemical companies are guilty of causing serious____________ of lakes and rivers. (pollute) 27.Are world leaders doing enough to prevent the total ____________ of out planet? (destroy) 28.____________ is a subject like Biology and History that should be taught in all schools. (conserve) 29.Most people now understand the ____________ of saving water wherever possible. (important) 30.Our school is involved in the ____________ of our local park and the wildlife living in it. (protect) 31.I feel strongly about the ____________ of greener types of energy. (develop)