Calcium is a substance found in vitamins that people take to help strengthen their bones and teeth. Which plant has been used for a similar purpose?

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.

What are the three types of counseling established by marine corps policy?

What organ systems are working to you cool down after a workout?