Imagine, for a moment, a forest without the chirps of birds. A pond without the cloak of frogs. A savannah without the trumpeting of elephant. Unfortunately we seems to be headed in that direction as the planet's sound track changes rapidly and irreparable.
Nature, in the broadest sense,is the natural, physical, or material world or universe. It can also be the phenomenon of the physical world and also to life generally.
EVERY species plays a crucial role in our natural world but when human tinker with the equation, a chain reaction can cause entire ecosystem to break down.
Our planet is a wonder, a perfectly improbable incubator for life.