4A Contents
Unit 1 About the Earth
1 Structure of the Earth / 4 2 Movement of the Earth / 12 3 Weather and Climate / 17
Unit 2 Living Things and Environment
4 Animals, Plants and the Environment / 28 5 Balance of Nature / 39
Unit 3 Continuation of Life
6 Reproduction and Heredity of Plants / 50 7 Reproduction and Heredity of Animals / 57
Unit 4 Prevention Is Better than Cure
8 Infectious and Non−infectious Diseases / 68
Appendices: Reading to Learn Glossary
Visit the subject website to view the resources: https://ephsci.ephhk.com
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