HS-LS2-3
Construct and revise an explanation based on evidence for the cycling of matter and flow of energy in ecosystems.
Clarification statement: Emphasis is on conceptual understanding of the role of aerobic and anaerobic respiration and photosynthesis within ecosystems.
Assessment boundary: Assessment does not include the specific chemical processes of aerobic respiration, anaerobic respiration, and photosynthesis.
Resources
Examples and discussion of resources for the learning, teaching, and assessment of HS-LS2-3.
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Regents Exam Questions
Released New York State Regents exam questions that assess HS-LS2-3 are listed here by exam and question cluster. Each link opens the question with its answer key.
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NGSS Dimensions
Performance expectation HS-LS2-3 was developed using the following elements from the NRC document A Framework for K-12 Science Education: