which two body system, when working together, give your body shape and allows you to move around, like the boy seen here

Explain the side effects of cancer treatments

Identify the various levels of atmosphere. troposphere mesosphere exosphere stratosphere thermosphere

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.