the concentration of carbon dioxide in the atmosphere has been increasing for many years, how might this increase affect photosynthesis

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.

Discuss the functions of epithelial connective nerviud and muscular tissues

Which is abiotic? a. tree sap b. insect c. sunlight d. wood table