11.   Native peoples who depend on the forests for their livelihoods, and animal species like the Siberian tiger, have suffered.

12.   Although grazing has some harmful ecological effects, ranchers have preserved habitats and migration routes for many animal species simply by keeping the lands they own open and undeveloped.

13.   And biotechnology companies are eager to gain access to exotic environments containing tens of millions of plant and animal species that have yet to be scrutinized.

14.   And the more Jane watches the Nature Channel, the more convinced she becomes that men are pigs, bulls and whatever other animal species you wish to name.

15.   Biologists carefully spare some fruit- or nut-bearing trees that might attract certain bird and animal species.

16.   A major part of this evidence is coming from studies of female beauty in various bird and animal species, an area that has received relatively little scientific attention.

17.   Administrators believe the unique facility, which is designed to accommodate animal species of all types, will be used by researchers from cross the country.

18.   But, it says, the presence of numerous imperiled animal species are cause for concern.

19.   Countless plant and animal species owe their survival directly to fire.

20.   Coral reefs help create and maintain diverse and complex ecosystems that protect thousands of different plant and animal species important to the health of our oceans.