How are both curiosity and skepticism useful in science?

Where can you find prokaryotic and eukaryotic cells?

The bacteria found in soil is usually harmful and measures are taken to remove any traces of microorganisms. true or false

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.