11.   A mature raw egg hits the pan running and spreads by the second.

12.   A rule of thumb is to be wary of plants that spread by stolons, runners or rhizomes.

13.   After all, never before have average people had such instant access to information spread by groups representing all angles of a conflict.

14.   AIDS here, spread mostly by heterosexual encounters, hits the economically productive hardest.

15.   Agricultural societies dependent on one crop were more prone to bad health caused by crop failures or diseases spread by pests that thrive in grain stores and sedentary populations.

16.   But how much of the word of mouth was spread by genuine fans and how much was fabricated by pals of the filmmakers?

17.   But viruses are starting to spread by people sending infected documents by E-mail over the Internet.

18.   Cleanup crews have been hauling away tons of mud containing zinc, lead, iron, cadmium and other heavy metals spread by the spill.

19.   Finding countermeasures to Venezuelan equine encephalitis, a virus easily spread by mosquitoes.

20.   For instance, genes that make crops herbicide resistant could spread by pollination to weedy relatives, creating super-weeds.