Kelp beds provide a habitat to many marine organisms, including invertebrates, fish, and marine mammals. The top layers provide shelter and a source of food. If the top layer of kelp were harvested, it can harm species like the sea otter which uses kelp beds as a nursery. Describe how human communities will do over a period of time in which the kelp is farmed extensively.

Name the glands associated with human digestive system

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.

Why did mendel use pea plants in his experiments? a. they have no alleles. b. they are haploid organisms. c. they reproduce quickly. d. they are all male.