C.2 communities and ecosystem from Bob Smullen
Bio C2 Communities & Ecosystems in 5 minutes from roxprice:
Ecosystem Ecology: Links in the Chain – Crash Course Ecology #7 with Hank Green:
or here is Energy Flow in Ecosystems from Mr Andersen:
Mr Andersen explains Succession in 6 minutes:
and Hank Green takes 10 minutes in Ecological Succession: Change is Good – Crash Course Ecology #6:
Videos on Surtsey and primary succession: The Formation of Surtsey (Encyclopedia Britannica); Surtsey Still Surprises (58s); Stages of Primary Succession (3m 30s).
4.2 energy flow from dabagus
An 11m video lesson on this sub-topic from Dan Rott videos:
Energy Flow in Ecosystems, a 7m 45s lesson from Mr Andersen from Bozeman High. In Crash Course Biology Fungi: Death Becomes Them, Hank Green explains how fungi, which thrive on death, make all life possible.
Energy Flow – FCPSBiology (6m 26s):
In Crash Course Biology Fungi: Death Becomes Them, Hank explains how fungi, which thrive on death, make all life possible.
Key terms as flashcards from Quizlet (you also can test yourself in a number of ways):