A ) retrospective B ) denounce C ) target D ) classify E ) appeal F ) attempt G ) marvel H ) terminated l ) contrast J ) survival K ) tentative L ) foster M ) generating N ) substantial O ) boycott The rapid development and the excessive use of chemicals in the world have led to the rapid consumption of natural resources . the speedy worsening of the natural environment , and the extinction of a variety of species . The collective result will definitely run the earth someday if this situation is not 27 ) _ and reversed , hen humankind will have become extinct . even before the earth is destroyed . In the modern world , everybody knows that we should protect our living environment , reduce the amount of gab age we product , 28 ) _ out garbage , and recycle as much as possible . Nevertheless , we are still consuming 29 _ amounts of energy resources every day , and producing termen dous amounts of garbage and pollution . If we take a 30 ) _ look at hunan history , we can see that in the agricultural gangs garbage could become the fet i liz er and soil , returning to nature ; in 31 ) _ , the natural resources consumed by the modern industry . and commercial sections are non - renewable . Contemporary cl wild z ation produces a huge amount of pollution , and this act is as horrible as 32 ) _ a tremendous au an fills of cancer cells in the body of Nature .