Sometimes the smallest things are of the great importance. How a little word of kindness can make the whole scenario changed. How a little act of love make your whole busy worn out day to be changed in a peaceful one.
Like above things, our eco system works in the same way. Every tiny organism is as important as the mammoth elephant. Nature follows only one rule, the balance in every thing. If we destroy the balance in our eco system, then for sure we make our world, a hell.