Ecology and Interdependence
9th Grade · Science · 75 min· Standard 8 - Develop And Use Models To Describe The Cycling Of Matter And Flow Of Energy Between Abiotic And Biotic Factors In Ecosystems.
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Learning Objective
I can model how energy and matter move between living and nonliving parts of an ecosystem.
- 1
The major source of energy on our planet is the sun, which plants convert into usable energy through photosynthesis.
- 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
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.
