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ALH1 U11 video
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used to say that something or someone is unlike anything or anyone else
unique
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difficult
tough
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part of a tree that grows out from the trunk
branch
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relating to the ability to think in a logical way
intellectual
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the state in which something exists
conditions
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a choice or possibility
option
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the ability to do something difficult for a long time
endurance
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the force that causes a moving object to slow down when it is touching another object
friction
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a very popular or active place
hotspot
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the back part of the foot
heel
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white powder
chalk
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difficult in a way that is usually interesting or enjoyable
challenging
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