Introduction >Home Page >About this Guide >Table of Contents Contents 1. What you can do 2. Water 3. Ecology 4. Amphibians 5. Environmental Issues 6. Keystone species 7. Get Wet!- Field Study Ideas 8. The Zoo Experience 9. Frogs & Friends 10. Case Studies 11. Resources 12. Glossary |
Wetland Curriculum Resource
Unit 4. Amphibians - Background for Educators 4.5. ALL THINGS MUST PASS Purpose: To observe osmosis in an animal membrane. What You Need:2 eggs :: distilled water :: vinegar :: concentrated salt solution :: 2 beakers :: spoon Note: Dilute hydrochloric acid works more effectively than vinegar. Make sure that it is diluted at a ratio of 5:1 water:acid WARNING: Always pour acid into water. Never pour water into acid. Wear goggles. What You Do:
Questions:
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