NCES.8.L.3 - Understand how organisms interact with and respond to the biotic and abiotic components of their environment.
- NCES.8.L.3.1 - Explain how factors such as food, water, shelter and space affect populations in an ecosystem.
- NCES.8.L.3.2 - Summarize the relationships among producers, consumers, and decomposers including the positive and negative consequences of such interactions including:Coexistence and cooperation;Competition (predator/prey);Parasitism;Mutualism
- NCES.8.L.3.3 - Explain how the flow of energy within food webs is interconnected with the cycling of matter (including water, nitrogen, carbon dioxide and oxygen).