B Biology 4.1-4.2 Slides: Ecosystems & Energy Flow from Jacob Cedarbaum. Notice this covers 4.1 and 4.2.
Find a video lesson on this sub-topic at Dan Rott videos.
In Crash Course Biology #40 – Ecology: Rules for Living on Earth, Hank introduces us to ecology.
Thank you Mr Andersen
Population growth patterns (13m 58s):
An animated tutorial from McGraw Hill Education on r & K strategies.