This difference is creating a major problem for the islands and the natural species that inhabit them.

It is reputed not to be a natural species, but one which has been created by Chinese fishbreeders.

They knew, of course, that the natural species valued many things and activities which they themselves did not appreciate at all.

All natural species and naturally occurring forms are included in this group.

The project tries to enhance public awareness on environmental issues for rare natural species.

Some are natural species that grow well when the water they get has a high salt content.

Concepts, like other natural species, can be threatened with extinction 'Violence' has lately been in danger.

The difference between natural species and domesticated varieties in respect to fertility.

The two had gotten along very well, ever since discovering that each was isolated from his or her natural species.

You'd have neither the natural species nor the mutants.