Referring to plants that produce offspring of the same variety when they self-pollinate.

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.

All organisms contribute some water to the water cycle by conducting

This is collection of data made by comparing objects in standard units. in science, the units are metric.