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Help on 1 and 3 thanks ...
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Help on 1 and 3 thanks ...

Help on 1 and 3 thanks ...-example-1
User EhTd
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On #3, it could be that the tree rings can tell scientist about what had happened to the tree in the past, or by how old it is. Either of them would work.
User Arunkjn
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On number one you could say dirt seeing as dirt is another word for earth because it makes up earth
User Chifliiiii
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