For evidence, you need not look any further than your own body. Quietly at work in your digestive tract, an army of friendly bacteria help you to stay healthy by destroying harmful invaders and by aiding in digestion and in the production of essential vitamins.
ცოცხალი ბუნება ურთიერთდაკავშირებულ და ურთიერთდამოკიდებულ ორგანიზმთა ქსელია.