Can be seen only under magnification are part of the 2 world.
Chapter 1 2 chemistry far and wide.
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Native americans in what is now illinois drilled holes in mussel shells and carved lines onto the shells to make them look like small fish.
Chapter 7 introduction to chemistry.
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1 l2 l2 2 l1 section resources 12 chapter 1 1 2 chemistry far and wide the first tools were objects such as a stone with a sharp edge.
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Name date 11 some human genes have been inserted into bacteria.
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Chapter 1 2 chemistry far and wide.
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In time people learned to reshape these objects to produce better tools.
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