When I was a child, we planted a lot of fruit trees in the backyard, especially guava I liked to eat, chickens liked to eat, and earthworms liked to eat too.  I ate fresh guavas picked from trees, chickens liked to eat guavas on the ground, and some insects and earthworms ate rotten guavas.

Then, the chickens were good in hearing and knew where the earthworms were, and the chickens turned the soil to eat the earthworms. Finally, I had a juicy chicken meal on the table.

Everything in nature is the best arrangement, and nothing is wasted.