Section 1 of 2Unit cover
Section 2 of 2Lessons in this unit
| Topic | Lessons |
|---|---|
| 4.1 The Earth’s Atmosphere | 4.1.1 Development Of The Earth’s Atmosphere 4.1.2 The Carbon Cycle 4.1.3 The Greenhouse Effect 4.1.4 Human Impacts On The Climate 4.1.5 Climate Change: Impacts and Mitigation 4.1.6 Pollutants That Affect Air Quality 4.1.7 The Water Cycle 4.1.8 Sources Of Potable Water 4.1.9 Required Practical 11: Water Analysis |
| 4.2 Ecosystems and Biodiversity | 4.2.1 Levels Of Organisation In An Ecosystem 4.2.2 Interdependence and Competition 4.2.3 Factors That Affect Communities 4.2.4 Field Investigations 4.2.5 Required Practical 12: Population Sampling 4.2.6 Biodiversity 4.2.7 Negative Human Impacts On Ecosystems 4.2.8 Positive Human Impacts On Ecosystems |
| 4.3 Inheritance | 4.3.1 Chromosomes and Genes 4.3.2 Sex Determination In Humans 4.3.3 Single Gene Inheritance 4.3.4 Genotype and Phenotype |
| 4.4 Variation and Evolution | 4.4.1 Mutations 4.4.2 Evolution Through Natural Selection 4.4.3 Evidence For Evolution 4.4.4 Identification and Classification Of Living Things 4.4.5 Selective Breeding 4.4.6 Genetic Engineering |