Please help. I can't figure this out.

Write a paragraph at least 5 sentences “why all vaccinations should be mandatory”

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.

Plants consume most of their carbon from a. the soil b. the water c. the roots d. the air