Scholastic Study Jams!
Source: http://studyjams.scholastic.com/studyjams/jams/science/ecosystems/ecosystems.htm
Analyzing an Ecosystem
Source: http://www.pbslearningmedia.org/resource/lsps07.sci.life.oate.ecosystem/analyzing-an-ecosystem/
Source: https://www.youtube.com/watch?v=iFeRFmqFChQ
Source: http://www.asdk12.org/staff/soltis_deborah/CALENDAR/66212_Biodiversity_Video.pdf