21.   Many consultants used to study a company, prepare a white paper on a management subject and walk away.

22.   Many species of plankton can generate light, so measurements of bioluminescence can be used to study their global distribution.

23.   Marine biologists used to study life in the ocean deeps by tugging nets behind boats and examining what they dragged up.

24.   Mice are often used to study mammalian development, and teeth are easy to work with because they grow well outside the body.

25.   Normally, two rings are used to study bats.

26.   Provides funds to continue the Tres Rios effluent reclamation project in Phoenix and creates language to prohibit federal funds from being used to study the draining of Lake Powell.

27.   Since electricity is used to make the tweezers work, they could also be used to study the electrical properties of the tiny structures and molecules they grasp.

28.   Some animals are used to study the side effects of unproven drugs.

29.   The BIO-Plex will likely be used to study the psychological stresses of the isolation and confinement posed by the long flights as well as health care strategies.

30.   The dispute is rooted in the detailed, sophisticated techniques astronomers use to study stars that are only points of light, even in the biggest telescopes.