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The molecular clock (based on the molecular clock hypothesis (MCH)) is a technique in molecular evolution that uses fossil constraints and rates of molecular change to deduce the time in geologic history when two species or other taxa diverged. It is used to estimate the time of occurrence of events called speciation or radiation. The molecular data used for such calculations is usually nucleotide sequences for DNA or amino acid sequences for proteins. It is sometimes called a gene clock or evolutionary clock.
A chemical change has occurred because the wood has turned into a substance that can't be changed back to it's original form. The wood has turned to ash, chemical changes are non reversible.
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Explanation: (1) Light energy and chemical energy should be switched. (2) Chemical energy should be changed to mechanical energy
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D. Actin and myosin are completely overlapped.
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A solitary called life form would have an external covering in particular. Clarification: Having a brain, legs and inner organs is excessively perplexing for a unicellular organism(organisms with one cell)
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