Ecosystem vocabulary Quiz
http://www.thatquiz.org/tq/previewtest?H/H/X/Q/09681203054935
Nelson-Work the Web
Loads of links on SUSTAINING ECOSYSTEMS
http://www.science.nelson.com/0176075011/teachactivities_ch04.html
Excellent Ecology Power Point with videos (right click and click "play movie")
http://biology4teachers.com/Ecology/Ecology%20Food%20chains%20webs%20VIDEO.ppt