It's true that many, perhaps most, species have become extinct as a result of natural process rather than human interference. After all, compared to the existing time of the planet, human history is too short a period. However, this does not follow that it's of no justification for society to try to save endangered species. The contention apparently ignores the fact that there are a delicate ecological balance in the nature, of which human beings is a part and any action of any part of the ecological cycle will have an effect on the nature sooner or later.

It seems unnecessary for people to interfere in the protection of the ecological balance, it seems that human beings can do little since, compared with the force of the nature, human beings are too weak to make any great effect on the environment. Thus it is of no justification for...