I really need help in Life science?

That's basically just the story of the frog prince, so why don't you look up the ending to that story, and get ideas from there? Maybe throw in something about environmental responsibility and promises that we as the dominant species need to make to the species that count on us. Also say something about how every species has a part to play in the ecosystem to help out other species. If a certain species went extinct because their habitat was destroyed, then other species would suffer as well (Use the frog getting the ball for the prince as an analogy for how we all need to co-operate between species).