You place a glass of water in the freezer. hours later the glass of water has frozen solid. what happened to the particles in the glass?
a. they started to move freely.
b. they slowed down and packed together.
c. they moved faster and packed together.
d. they slowed down moved freely.
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How is ribosomal rna useful as a molecular clock? a. a large portion of the dna ring is not vital to structure or function, allowing it to accumulate neutral mutations. b. its rate of mutation increases over time as organisms continue to evolve and differentiate from each other. c. a slow mutation rate makes it useful for determining evolutionary relationships between ancient species. d. it is only found in select organisms, making it easier to compare relationships between species that have it.
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