MS-LS2-4: Ecosystem Interactions and Dynamics

Construct an argument supported by empirical evidence that changes to physical or biological components of an ecosystem affect populations. (Stability and Change)

Clarification Statement: Emphasis is on recognizing patterns in data and making warranted inferences about changes in populations, and on evaluating empirical evidence supporting arguments about changes to ecosystems.

Assessment Boundary: none


The following assessments were created by science teachers hoping to better understand the NGSS. In most cases teachers went from standard to assessment in around an hour.  These are drafts and should be used accordingly. Feel free to improve these assessments or contribute to the collection. Learn more about assessment design here.




 - Physical (e.g. rainfall, fire)
 - Biological (e.g. predator removal, species introduction)
Population change (e.g. size, species present, prevalence of species in ecosystem)
Stability and Change


Lesson Plans


*Next Generation Science Standards is a registered trademark of Achieve. Neither Achieve nor the lead states and partners that developed the Next Generation Science Standards were involved in the production of this product, and do not endorse it.  Visit the official NGSS website.