Nature has millions of intervowen interrelationships among the numerous flora and fauna. Such relationships are the basis for the food webs and food pyramids. These food webs and pyramids can give us a broad idea that organisms interact with each other for their food, shelter and mating. Each specific interrelationship if studied in depth can be very interesting and brings to light significant facts of our sorroundings and the importance of each and every living being on this earth and its function in sustaining the ecological processes. In fact if the entire nature is considered one machine, each and every living being has its own role in smooth running of this machine. But knowingly and unknowingly, we have not taken care or forced to destroy such interrelationships in the path of 'development'.

While we talk of big things like "Global warming," "Green House Gases" and such other impending disasters, we are doing little precious either in understanding these interrelationships or our scientific community has not been able to keep pace with the enormity and complexity of ecological relationships.

Even if the world is protected from global warming, can the man and his domesticated crops and animals survive with out the aid of other living beings on this earth? Can the nature sustain such loss of vast number of living beings