3. Ecology and the Environment
📖 Lessons in this unit — choose a lesson
Lesson 1Unit 3 overview: Ecology and the Environment1 pointsLesson 23.1.1 Population, Community, Habitat and Ecosystem5 pointsLesson 33.1.2 Practical: Investigating Population Size5 pointsLesson 43.1.3 Abiotic and Biotic Factors7 pointsLesson 53.2.1 Trophic Levels6 pointsLesson 63.2.2 Food chains, Food webs and Pyramids7 pointsLesson 73.2.3 Transfers Along a Food Chain4 pointsLesson 83.3.1 Carbon Cycle7 pointsLesson 93.4.1 Biological Consequences of Air Pollution4 pointsLesson 103.4.2 Greenhouse Gases4 pointsLesson 113.4.3 Enhanced Greenhouse Effect8 pointsLesson 123.4.4 Biological Consequences of Water Pollution4 points