Elements cannot be broken down into simpler substances by chemical change.
True or False?...
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Embryos of different species look very similar, which shows that the organisms share a ancestor.
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Pinene is an unsaturated hydrocarbon found in pine resin. if pinene has m+ = 136 and contains 1 double bond(s) and 2 ring(s); what is its molecular formula? enter the formula in the form ch first, then all other atoms in alphabetical order; do not use subscripts. the formula is case-sensitive
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