Here are some things that you can do to prevent a decomposing world...
Animal Extinction - Vets work to help animals get stronger after being ill. The word veterinarian comes from the Latin word veterinae meaning, working animals. About 80% of vets are women. On the other hand, zoologists often research about animals. Zoologists often specialize in a certain family of animals. It is rare that a zoologist researches all animals.
Diseases - Docters save many lives at their time in the hospital. An average docter has 40,000 hours of training.