Help y’all If we start with 100 gram of Carbon 14 and 2 half lives pass, how much un-decayed Carbon 14 remain? how many years will have passed for 2 half lives of Carbon 14?

What is the mrna strand that would be copied from this dna strand

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.

Where are the strongest jet streams located?