You can really tell how far we've come when it comes to plant and crop growing. Just a few decades ago we were filling our crops with pesticides and chemicals in hopes that crops would grow better. Now, we've taken a reverse approach, and gotten back to our natural resources as the best way to grow crops.
I think the image on page 16 of the "State of the World" book shows nicely how plants, animals, and insects can work together in creating a healthy environment. Everything has a purpose and has a place in the ecosystem. It's important to take advantage of our natural resources. People got away from it and just started spraying chemicals that did more hurt than good. The diverse, natural cropping provides a healthier and safer environment and I'm glad to see people realizing this and getting back to natural uses.
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