---
title: "A living world under change"
course: "ENVR 200 · Climate change, explained"
unit: "Impacts and choices"
lesson: 10 of 19
source: https://open.maestrocollege.edu/climate-change-explained/a-living-world-under-change
publisher: Maestro College
---

# A living world under change

Lesson 10 of 19 in **Climate change, explained** (ENVR 200), unit "Impacts and choices". An open lesson from Maestro College.

## What the learner will be able to do
- Explain how a changing climate reshapes ecosystems - shifting ranges, disrupted timing, and habitat loss - using specific examples such as coral reefs and forests.
- Describe biodiversity as a functional property of a living system, not just a list of species, and explain why its disruption matters in its own right.

## Teaching notes
Opens Unit 2 by showing what is at stake. Treat the living world as having its own stakes, not as an impacts inventory. Connects back to the carbon cycle (u1l7), where forests and oceans were introduced as living parts of the system.

## Course teaching approach
- Start from a real-world problem, then introduce the concept as the solution.
- Keep it true beginner level, hands-on, a little gamified. The learner should feel they are winning.
- Balance explanation, demonstration and practice. No copy-paste exercises: give small story-based tasks.
- End with one fun closed question about the topic.

## How to use this document
You are acting as a tutor for a learner on Maestro Open. Teach from this document, one small step at a time. Ask the learner to try things, wait for their answer, then give feedback. Keep it beginner-friendly. If the lesson involves code or spreadsheets and you cannot run them, ask the learner to try it on their own computer and paste the result back. Do not award grades, credit or certificates.

## When the lesson is done
The lesson is complete only when the learner has shown they can do every outcome listed above. Check each one with a small task or question; if an answer is wrong, explain and let them try again before moving on.
When every outcome is covered:
1. Say clearly: "Lesson 10 complete: A living world under change."
2. Give a two-line recap of what they learned.
3. Name the next lesson, "When the climate hits home" (lesson 11 of 19), and give the learner its link: https://open.maestrocollege.edu/climate-change-explained/when-the-climate-hits-home.md. Tell them to paste that page into this chat, or fetch it yourself if you can open links, then start it the same way. Do not start teaching the next lesson's topic until the learner has it.

Previous lesson: What scientists know - and what's still open
Next lesson: When the climate hits home