HS-LS2.A: Interdependent Relationships in Ecosystems

• HS-LS2-1 Lesson Plans: Use mathematical and/or computational representations to support explanations of factors that affect carrying capacity of ecosystems at different scales.
• HS-LS2-2 Lesson Plans: Use mathematical representations to support and revise explanations based on evidence about factors affecting biodiversity and populations in ecosystems of different scales.

HS-LS2.B: Cycles of Matter and Energy Transfer in Ecosystems

• HS-LS2-3 Lesson Plans: Construct and revise an explanation based on evidence for the cycling of matter and flow of energy in aerobic and anaerobic conditions.
• HS-LS2-4 Lesson Plans: Use mathematical representations to support claims for the cycling of matter and flow of energy among organisms in an ecosystem.
• HS-LS2-5 Lesson Plans: Develop a model to illustrate the role of photosynthesis and cellular respiration in the cycling of carbon among the biosphere, atmosphere, hydrosphere, and geosphere.

HS-LS2.C: Ecosystem Dynamics, Functioning, and Resilience

• HS-LS2-6 Lesson Plans: Evaluate the claims, evidence, and reasoning that the complex interactions in ecosystems maintain relatively consistent numbers and types of organisms in stable conditions, but changing conditions may result in a new ecosystem.
• HS-LS2-7 Lesson Plans: Design, evaluate, and refine a solution for reducing the impacts of human activities on the environment and biodiversity.

HS-LS2.D: Social Interactions and Group Behavior

• HS-LS2-8 Lesson Plans: Evaluate the evidence for the role of group behavior on individual and species’ chances to survive and reproduce.