U3L1 The date palm
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U2L5 How do many hearing impaired peopl
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U2L4 Why can a plant kill?
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U2L3 Why is the sea salty?
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U2L2 Why do people laugh?
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U2L1 Why do we yawn?
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U1L5 The dolphin
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U1L4 The Hippopotamus
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U1L3 The Polar bear
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U1L2 The Camel
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