Take the Ecosystem quiz!
A. http://www.neok12.com/quiz/ECOSYS01
Match them!
B. http://www.quia.com/mc/279041.html
Animal adaptations!
C. http://www.ecokids.ca/pub/eco_info/topics/climate/adaptations/index.cfm
Chain reaction!
D. http://www.ecokids.ca/pub/eco_info/topics/frogs/chain_reaction/index.cfm