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1、 The Arctic is facing serious p due to climate change.
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2、 Plants can s water in their roots.
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3、 The Great Barrier Reef is the largest coral r in the world.
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4、 We should p wild animals from being killed.
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5、 The e includes all living and non-living things in an area.
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6、 It's important ____ the environment.A、protect B、to protect C、protecting D、protected
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7、 The wetlands（湿地） ____ many kinds of plants and animals.A、is home to B、are home to C、is home of D、are home of
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8、 We can help protect ecosystems ____ planting more trees.A、by B、with C、for D、at
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9、 ____ the climate is changing, animals are losing their homes.A、So B、But C、As D、Or
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10、 Many animals ____ in the ocean.A、lives B、live C、living D、to live
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11、 The sun ____ light and heat to the earth.A、give B、gives C、giving D、to give
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12、 We should ____ rubbish to protect the ocean.A、not throw B、not to throw C、not throwing D、not thrown
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13、 Forests ____ the "lungs" of the earth.A、are called B、is called C、called D、calling
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14、 Wetlands ____ like the "kidneys" of the earth.A、act B、acts C、acting D、to act
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15、 The ocean ____ about 71% of the earth's surface.A、cover B、covers C、covering D、is cover
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16、 Zhalong Nature Reserve is a ____ for many rare birds.A、home B、school C、factory D、hospital
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17、 Many animals are in danger because of ____ loss.A、habitat B、food C、water D、energy
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18、 The Great Barrier Reef is made up of millions of ____.A、corals B、trees C、grasses D、flowers
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19、 Plants in forests can take in carbon dioxide and produce ____.A、water B、oxygen C、food D、sugar
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20、 The ____ of the Arctic is changing due to global warming.A、climate B、temperature C、weather D、season