---
title: Ecosystems and Interdependence
created: '2026-05-26'
updated: '2026-05-26'
type: lesson_topic
subject: science
tags:
- science
- grade-2
- homeschool
- ngss
standard: 2-LS1, 2-LS2
phase: 2
phase_name: 'WINTER: Life Science - Plants and Ecosystems (Weeks 11-20)'
weeks:
- 20
source: ''
---
# Ecosystems and Interdependence
Second grade science topic covering ecosystems and interdependence. Part of Phase 2 (WINTER: Life Science - Plants and Ecosystems (Weeks 11-20)).
## Key Concepts
How living things depend on each other
- **Objectives:** Understand relationships in ecosystems
- **Activities:**
- Food chain introduction (simple 3-4 link chains)
- "What if?" scenarios (what if plants disappeared?)
- Create a mini ecosystem in a jar (if possible)
- **Assessment:** Food chain diagram
---
## Standards
2-LS1, 2-LS2
## Prerequisites
[[solids-liquids-gases-introduction]], [[solids-deep-dive]], [[liquids-deep-dive]], [[gases-and-air]], [[states-of-matter-review-testing]]
## Related Topics
[[what-do-plants-need]], [[plant-growth-experiment-setup]], [[observing-plant-growth]], [[more-plant-growth-observations]], [[plant-parts-and-functions]], [[plant-needs-experiment-results]], [[introduction-to-habitats]], [[land-habitats]], [[water-habitats]]
---
*Generated from curriculum data* ^[[raw/curriculum/science]]