Hydrogen,oxygen,nitrogen and carbon. Some might also contain a fifth element, sulfur. (Hope this helped!)
I think its B.....hope it helps
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Option C RrYy
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Thats whats missing from the table.
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A device to measure the dimensions of a object
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A key feature of animal body plans is that they can show multiple types of symmetry. [ For example, a dog would represent bilateral symmetry while a jellyfish and other Cnidarian would represent: radial symmetry
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