How will cellular respiration affect oxygen levels

Loss of protected health information collected for research should be directly reported to:

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.

At which point is crust neither created nor destroyed? island chain mid-ocean ridge divergent boundary transform boundary