Adaptations & Natural Selection
Topic (26) Evaluate claims about ecosystem stability vs change related to ecosystem change. (HS-LS2-6)
An adaptation is a trait or behavior that helps an organism survive and reproduce. Traits are genetic differences that occur in a species. Traits are developed as a species adapts to its environment.
Day 1 – Introduction
- Student Work Packet – Topic 26
Day 2 – Virtual Textbook
- Read Biology 26 – Natural selection
- Read Biology 26 – Adaptation
- Launch cK-12 (08.05) Natural Selection pdf file
- Read Biology Textbook – pages 308-319
- Write a letter – Adaptations & Natural Selection (pdf)
- Write a letter – Adaptations & Nat’l Selection OK standards (pdf)
- Conduct Lab 12 Diversity of Life
5:23 Five fingers of evolution – Paul Andersen
3:02 How do ecosystems change over time? (Ecological Succession)
2:59 Why Did T Rex Have Such Tiny Arms?
Standard Daily Material
- Day 1 – Standard material – introduction day
- Day 2 – Standard material – reading day
- Day 3 – Standard material – make a presentation
- Day 4 – Standard material – give a presentation
- Extra! – Enrichment and remediation options
Other Topic Specific Resources
- Distribute LS26 Arctic Wars Lynx vs Snowshoe Hare.tns
- Distribute LS26 Bellringer Natural Selection.tnsp
- Distribute LS26 Natural Selection.tns
Special Notes and Notices
- Science & Engineering Practice: Ask questions and define problems.
- Cross-Cutting Concept: Stability and Change.
Emphasize HS-LS2-6 Evaluate the claims, evidence, and reasoning that the complex interactions in ecosystems maintain relatively consistent numbers and types of organisms in stable conditions, but changing conditions may result in a new ecosystem.