HS-ESS2-7
The standard
Construct an argument based on evidence about the simultaneous coevolution of Earth systems and life on Earth.
Next Generation Science Standards
What this standard means
Students need to argue, using evidence, that life and Earth’s systems changed together over time. They should connect living things with the atmosphere, rocks, oceans, soil, and climate. The key move is showing cause and effect in both directions, not just saying one changed the other.
Mastery looks like a clear claim, specific evidence, and reasoning that explains feedback. Students often get stuck making one-way timelines, such as oxygen came from plants, without explaining how oxygen then changed weathering, oceans, or later life. They may also confuse correlation with evidence for a mechanism.
Ways to teach it
- Hands-on: Give groups event cards for oxygen, weathering, soils, land plants, corals, reefs, and animals, then build a linked cause-effect map.
- Prompt: Explain how one life form changed an Earth system, then how that changed future life, using two pieces of evidence.
- Quick assessment: Students complete a claim-evidence-reasoning exit ticket about photosynthesis, atmospheric oxygen, and animal evolution.
- Real-world connection: Compare modern coral reef loss maps with shoreline protection and habitat data to discuss biosphere and geosphere feedbacks.
Plan a lesson for HS-ESS2-7
Generate a complete lesson plan aligned to this standard, with objectives, activities, and materials. Free, no account needed.
Related standards
- MS-ESS2-2
Construct an explanation based on evidence for how geoscience processes have changed Earth's surface at varying time and spatial scales.
- MS-ESS3-4
Construct an argument supported by evidence for how increases in human population and per-capita consumption of natural resources impact Earth's systems.
- K-ESS2-2
Construct an argument supported by evidence for how plants and animals (including humans) can change the environment to meet their needs.
- 3-LS4-3
Construct an argument with evidence that in a particular habitat some organisms can survive well, some survive less well, and some cannot survive at all.