11.   This, combined with lively illustrations, provides material that is easy to teach and fun to learn.

12.   Perhaps the most amazing discovery of all is the importance of salmon in providing material to fertilize the entire rainforest ecosystem.

13.   Some provide material on disk, which is a great help as it saves having to retype or scan the text.

14.   The range of possible interpretations of these ratios is quite wide, however, and could provide material for further research.

15.   As soon as I had complaints, I asked for detailed statistical material to be provided.

16.   They are smaller and less well equipped than the large Roman establishments but, being in a much better state of preservation, have provided invaluable material for study.

17.   She provides the material for the Board of Fellows when it meets to consider the applications for upgrading to Fellowship.

18.   The unions also provided copious material.

19.   And from the Bitzer film onward, the schools have provided irresistible material for creative artists ranging from photographers to playwrights, authors to filmmakers to pop songwriters.

20.   And cover crops can provide organic materials that gardeners would otherwise have to gather or buy and then spread as mulch.