If I could stop the tiger population from decreasing by mating tigers and helping raise baby tigers it would change the world. Many things would have to be done to help, such as protecting their environment. I will be going to school for biochemistry to learn how to protect the environment. As insignificant tigers may seem to people, they do play a huge role in our ecosystem. It will not do us any good to take out one of the top predators in the food chain. If I could do one thing to help change this world, I would save the tigers. I love animals, and the environment, and studying biochemistry will help me achieve saving them.