According to the conveyor belt model of ocean circulation, what usually happens when water reaches the poles?

Modern whales developed their traits through natural selection what occurs during the process of natural selection

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.

Which process of living things produces water that enters the water cycle