Nature is very clear on this. In fact, there's one...

Nature is very clear on this. In fact, there's one fundamental law that all of nature obeys that mankind breaks everyday. Now this is a law that's evolved over billions of years and the law is this: nothing in nature takes more than it needs. A redwood tree doesn't take all of the soil's nutrients, just what it needs to grow. A lion doesn't kill every gazelle, just one. We have a term for something in the body when it takes more than its share. We call it cancer.