Why? The Environment (책 + 워크북 + 단어장 + 오디오 CD 3장)

Introduction to Why? The Environment 3
An Encounter with Kiki, a Forest Fairy 8
The Natural Environment and the Living Environment 13
The Biosphere and the Ecosystem 16

Destroyed Ecosystems
Disappearing Forests 20
Ecosystem Destruction 29
Extinction of Organisms 39
Disappearing Tidal Flats 48

Air Pollution
Precious Air 56
The Causes of Air Pollution 59
Scary Smog 61
A Punctured Ozone Layer 65
The Two Faces of Ozone 73
The Earth, Growing Warmer 76
Terrifying Acid Rain 89
How We Can Reduce Air Pollution 98

Water Pollution
Polluted Water 111
The Causes of Water Pollution 116
Eutrophication - Algae Blooms and Red Tides 123
Oil Pollution 129
Underground Water Pollution 132
The Effects of Water Pollution 135
How We Can Reduce Water Pollution 142

Soil Pollution
The Causes of Soil Pollution 146
The Damage of Soil Pollution 152
How We Can Reduce Soil Pollution 156