Difference between revisions of "MS-LS2-5"

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(Vocabulary section (terms from the Middle School Science Glossary) and PLD example questions)
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| Level3 = Evaluate competing design solutions for maintaining biodiversity and protecting ecosystem stability.
 
| Level3 = Evaluate competing design solutions for maintaining biodiversity and protecting ecosystem stability.
 
| Level2 = Given criteria, evaluate or describe a design solution, or possible solution, that maintains biodiversity or can protect the stability of the ecosystem.
 
| Level2 = Given criteria, evaluate or describe a design solution, or possible solution, that maintains biodiversity or can protect the stability of the ecosystem.
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| Example2 = [[Questions:Giraffe Adaptations and Population Changes#q5|Spring 2026 Question 48]]
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| Example2 = <span class="pld-chip pld-chip-ms">[[Questions:Giraffe Adaptations and Population Changes#q5|Spring 2026 · Q48]]</span>
 
| Level1 = Identify a given design solution, or possible solution, that addresses a problem to maintain biodiversity or that can protect the stability of an ecosystem.
 
| Level1 = Identify a given design solution, or possible solution, that addresses a problem to maintain biodiversity or that can protect the stability of an ecosystem.
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| Example1 = [[Questions:Behavior and Evolution of Guppies#q5|Spring 2025 Question 51]]
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| Example1 = <span class="pld-chip pld-chip-ms">[[Questions:Behavior and Evolution of Guppies#q5|Spring 2025 · Q51]]</span>
 
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Latest revision as of 09:45, 18 October 2026

← MS-LS2-2
MS-LS1-4 →

Evaluate competing design solutions for maintaining biodiversity and protecting ecosystem stability.

Clarification statement: Examples of ecosystem protections could include water purification, waste management, nutrient recycling, prevention of soil erosion, and eradication of invasive species. Examples of design solution constraints could include scientific, economic, and social considerations.

Grade 8 Science Test Questions

Released New York State Grade 8 science test questions that assess MS-LS2-5 are listed here by test and question cluster. Each link opens the question with its answer key.

Exam Cluster Question
Spring 2026 Grade 8 Test Giraffe Adaptations and Population Changes Question 48
Spring 2025 Grade 8 Test Behavior and Evolution of Guppies Question 51

Vocabulary

Terms from the Middle School Science Glossary that come from this standard or from the released Grade 8 Science Test questions that assess it.

From this standard
  • biodiversity
  • competing design solutions
  • constraint
  • criteria
  • design solution
  • ecosystem
  • ecosystem services
  • ecosystem stability
  • empirical evidence
  • energy
  • eradication
  • erosion
  • food
  • group behavior
  • human impact
  • invasive species
  • nutrient recycling
  • scientific reasoning
  • social interaction
  • soil erosion
  • solution
  • species
  • stability
  • test results
  • waste management
  • water purification
From released test questions

Performance Level Descriptions

Every Grade 8 Science Test question on MS-LS2-5 is written to match one of the performance level descriptions (PLDs) below.

Level 1: Identify a given design solution, or possible solution, that addresses a problem to maintain biodiversity or that can protect the stability of an ecosystem. Spring 2025 · Q51
Level 2: Given criteria, evaluate or describe a design solution, or possible solution, that maintains biodiversity or can protect the stability of the ecosystem. Spring 2026 · Q48
Level 3: Evaluate competing design solutions for maintaining biodiversity and protecting ecosystem stability.
Level 4: Given criteria, evaluate competing design solutions, using empirical evidence, scientific reasoning, and design constraints, that maintain biodiversity and protect ecosystem stability.
Notice: PLD levels!

Resources

Examples and discussion of resources for the learning, teaching, and assessment of MS-LS2-5.

Pixel beaver This section could be expanded upon. You can help out by adding to this section.


NGSS Dimensions

Performance expectation MS-LS2-5 was developed using the following elements from the NRC document A Framework for K-12 Science Education:

Science and Engineering Practices
  • Engaging in Argument from Evidence
    • Evaluate competing design solutions based on jointly developed and agreed-upon design criteria.
Disciplinary Core Ideas
  • LS2.C: Ecosystem Dynamics, Functioning, and Resilience
    • (NYSED) Biodiversity describes the variety of species found in Earth’s ecosystems. The completeness or integrity of an ecosystem’s biodiversity is often used as a measure of its health.
  • LS2.D: Social Interactions and Group Behavior
    • Being part of a group helps animals obtain food, defend themselves, and cope with changes. Groups may serve different functions and vary dramatically in size.
  • LS4.D: Biodiversity and Humans
    • Changes in biodiversity can influence humans’ resources, such as food, energy, and medicines, as well as ecosystem services that humans rely on – for example, water purification and recycling. (secondary to MS-LS2-5)
    • (NYSED) Humans impact biodiversity both positively and negatively. (secondary to MS-LS2-5)
  • ETS1.B: Developing Possible Solutions
    • A solution needs to be tested, and then modified on the basis of the test results in order to improve it. There are systematic processes for evaluating solutions with respect to how well they meet the criteria and constraints of a problem. (secondary to MS-LS2-5)
Crosscutting Concepts
  • Stability and Change
    • Small changes in one part of a system might cause large changes in another part.
Page contributors: Caroline Leonard, Conrad Richman, Shirley Shameen
MS | MS. Interdependent Relationships in Ecosystems
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