Why are aerobic reactions more efficient for cellular metabolism than anaerobic reactions?

Which taxon group is more specific, in regards to organisms that are in that group? mammalia animalia

Prompt compare the three types of volcanic mountains in terms of shape, type of eruption, and the minerals that make up the volcano

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.