Which of the following accurately describes the ph scale?
a. the lower the ph is, the more basic the solution is.
b. the lower the concentration of hydrogen ions, the higher the acidity is.
c. the greater the concentration of hydroxide ions, the higher the acidity is.
d. the greater the ph is, the lower the acidity is.

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.

How does photosynthesis show the conservation of mass and energy?

Witch theory suggests all living things are made up of cell or cells