Ecology and Interdependence

I can model how energy and matter move between living and nonliving parts of an ecosystem.

7:46

We don't generate video — this one is by Bozeman Science on YouTube. The practice questions and exit ticket below were drafted by AI for this objective, and every question is editable in the teacher guide.

1. 1

   The major source of energy on our planet is the sun, which plants convert into usable energy through photosynthesis.

2. 2

   Gross primary productivity is the overall amount of energy converted by producers, while net primary productivity is the energy remaining after the producers' respiration.

3. 3

   In an ecological pyramid, only about 10% of the energy from one trophic level is transferred to the next level, with the rest being lost as heat.

“Draw an ecological pyramid representing energy flow in a forest ecosystem. Label each trophic level (producers, primary consumers, secondary consumers, tertiary consumers) and indicate the relative amount of energy available at each level, assuming a 10% transfer efficiency between levels.”

Sample answer included in the free materials