be made up of, breadth, broad, broaden, calm sea, come across, come in, dangerous current, deep, deepen, depth, desert island / remote island, die out, fast-flowing river, slow-moving river, flow, giant wave, huge wave, go out, heat up, heavy sea, rough sea, height, heighten, high tide, length, lengthen, long, low tide, mountain peak, mountain range, mountain ridge, ocean current, river bank, seabed, stir up, strength, strengthen, strong, strong current, tidal wave, tropical island, volcanic eruption, whale, wide, widen, width, winding river, Environment & Energy, bicycle rack, climate, climate change, electricity, environment, environmental issues, gadget, global warming, in the school grounds, low-energy light bulb, organic, recycle, recycling bin, renewable energy, save electricity, solar panels, 5.2 Grammar, capital city, continent, country, economic growth, expand, inhabitant, innovation, locate, megacity, population, poverty, predict, production, provide, vertical, 5.3 Listening, affect, air quality, 5.4 Reading, backpack, bear, bear encounter, bee, branch, clearing, come face to face with, cub, defend, die from, flashlight, fox, go off, gorge yourself, hedgehog

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