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FIND OUT MORE. Forces 164 • Moon 17 • Oceans 40–41 • Sun 15 Coasts are border zones where the land meets the ocean. There is abo ...
60 Earth Energy is the force that makes things work. Over many years, people have learned to produce energy from various sources ...
Earth^61 WHAT ARE THE ADVANTAGES AND DISADVANTAGES OF NUCLEAR ENERGY? Nuclear fuel does not release the same polluting gases as ...
62 Earth FIND OUT MORE. Mountains 45 • Planet Earth 36–37 • Soil 48 • Winds 51 Every part of the world has its own climate – a c ...
FIND OUT MORE. Habitats 82–84 • Human Impact 64–65 • Winds 51 The Earth has three main climate zones – tropical, temperate, and ...
64 Earth HOW DOES FARMING CHANGE THE LANDSCAPE? Since farming began, 10,000 years ago, many wild landscapes have been transforme ...
FIND OUT MORE. Energy Resources 60–61 • Industrial Revolution 418–419 • Population 218 –219 • Transport 200–201 WHAT CAN BE DONE ...
66 Earth FIND OUT MORE. Agricultural Revolution 412 • Early Farming 364–365 • Genetic Engineering 210–211 • Southeast Asia 270–2 ...
FIND OUT MORE. Habitats 82–84 • Industry 204 • Trees 94–95 WHAT IS DEFORESTATION? In well-managed forests, trees are cut down si ...
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Life on Earth NATURE BIOLOGY 72 CELLS 73 EVOLUTION 74 FOSSILS 76 PREHISTORIC LIFE 77 DINOSAURS 78 ECOLOGY 80 HABITATS 82 MICRO-O ...
70 Nature LIFE ON EARTH Planet Earth is home to trillions of organisms (living things), including animals and plants. They are f ...
Nature^71 FIND OUT MORE. Algae 87 • Animals 96–97 • Planet Earth 36–37 • Fungi 86 • Microorganisms 85 • Plants 88–89 DO ALL PLAN ...
FIND OUT MORE. Animals 96–97 • Flowering Plants 92–93 • Microorganisms 85 Biology The study of life and living things is called ...
FIND OUT MORE. Evolution 74–75 • Microorganisms 85 Plasma membrane is the thin barrier that surrounds a cell Cytoplasm is the ar ...
74 Nature Evolution Living things gradually change over many generations in a process called evolution. This allows organisms to ...
FIND OUT MORE. Fossils 76 • Prehistoric Life 77 Nature^75 HUMAN EVOLUTION Early humans evolved in Africa about five million year ...
FIND OUT MORE. Dinosaurs 78–79 • Evolution 74–75 76 Nature HOW ARE FOSSILS FORMED? When an animal dies it is rapidly covered by ...
Prehistoric Life The period between the appearance of the first organisms, 3.8 billion years ago (bya), and the first written re ...
78 Nature Dinosaurs This group of land-living reptiles appeared around 230 million years ago. Like reptiles today, dinosaurs had ...
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