Each lesson on the archived ENSWEB site is copyrighted by ENSI or posted with permission of its source.
The material may be copied only for noncommercial classroom teaching purposes— and only if the source is clearly cited.
Who can use ENSIWEB materials?
Preferred citation
Flammer, L., J. Beard, C.E. Nelson, & M. Nickels. 1998. ENSIWEB. Evolution/Nature of Science Institutes. Retrieved [current date] from ensiweb.bio.indiana.edu.
Please also cite the author(s), date(s), and title(s) of any specific lesson(s) cited.