The deepest ocean zone, found in trenches and canyons, is called the hadal zone. Find it on the illustration. The few species that live here include tiny isopods, a type of crustacean related to crabs and shrimp and invertebrates such as sponges and sea cucumbers.
Considering the darkness, depth, cold temperatures, how do these organisms get the food needed to survive?
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Analogy- 1 is to arete as 5 is to cirque horn glacial valley hanging valley

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.

When listening the levels of orginization in orginisims from the smallest to most complex , which level is just below organs in complexity