1. What are three obstacles to studying the seafloor? 2. The atmospheric pressure is about 1 kilogram per centimeter squared (14.7 pounds per
square inch or 1 atmosphere) at sea level. About what is the pressure if you are 100
meters deep in the ocean?
3. What invention gave people the ability to map the ocean floor?
4. Which parts of the ocean floor would you expect there to be the greatest amount of
living organisms?
5. How much deeper did the Trieste submerge than Alvin?
6. Compare and contrast the continental shelf and the abyssal plain.
7. Why do you think mapping the seafloor is important to the Navy? Explain.
8. If the mid-ocean ridge is created where the tectonic plates separate, why is a mountain
range formed there?

there are mainly three domains in biological classification namely; archaea, bacteria, and eukarya.

archaea includes all the prokaryotic cells which are characterized by their lipid membranes. they have branched hydrocarbon which is attached to glycerol through an ether linkage.

bacteria includes all the prokaryotic cells, the cell membrane of which are made up of the unbranched fatty acid chain. in addition, they are attached to glycerol through an ester bond.

eukarya includes all the eukaryotic cells, that is, the cells contain a nucleus and other membrane-bound cell organelles.

they can be autotrophic as well as heterotrophic, unicellular as well as multicellular

they include kingdoms like protista, plantae, animalia, fungi et cetera.

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explanation:

the answer to your question is tooth decay.

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