In which direction or directions do sea floors spread? a. north and south parallel to mid ocean are ridges b. and or towards the mid ocean ridges c. outward away from the mid ocean ridges d. north on the east side of the mid ocean ridge and south on the west side of the ridge

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 advantage does a crop that undergoes vegetative reproduction have over plants that start from the seed? 1points a they store nutrients. b they can travel farther. c they experience more genetic variation. d they only occur in high-resource environments.

What is the starting point in replication called