21.   Cloning could also be useful in developing animals whose organs could be used for human transplants, and for preserving endangered species, he said.

22.   Had they not preserved the species as pets, Sri Lanka would have lost them forever.

23.   It includes the National Center for Shark Research, an international effort to understand and preserve the species.

24.   Large-scale commercial whaling was halted in the past in an effort to preserve some species of whales.

25.   Naturalist and wildlife writer Gerald Durrell died Monday on the Channel Island of Jersey, where he founded a zoo dedicated to preserving endangered species.

26.   Not everyone finds the shows an ideal way to preserve the species.

27.   The study demonstrated the need to protect and preserve the species, the Australian Koala Foundation said.

28.   The Smithsonian Institution, criticized for attempting to close its center to preserve endangered species, will establish a commission to help it refocus its scientific activities.

29.   The U.S. government has imposed curbs on commercial shark fishing to preserve species, and the price has been rising to the point where fins attract robbers.

30.   Chinese scientists hold high hopes for cloning technology and aim to eventually use the method to preserve endangered species such as the white flag freshwater dolphin.