1.0 - 1.1 Terms & Intro - An overview of some of the key terms we will be using in this unit and a review of some ideas from previous grades.
1.21 - Energy Flow. How does energy move through ecosystems and where does the energy we need to eat come from?
1.22 - Cycles - How are the building materials of life reused? What are the processes involved in changing these materials from one form to another?
1.33 and 1.42 - The story of the Cane Toad in Australia is an example of how competition affects organisms and what happens when an invasive species moves in. This video link details several segments in the story of the Cane Toad. Or you can watch this brief summary.