Consider the following statements, all of which are actually true, and select the one that best explains why the moment of inertia of the Earth is actually smaller than the moment of inertia you calculated. a. The Earth is an oblate spheroid rather than aperfect sphere. For an oblate spheroid, the distance from thecenter to the equator is a little larger than the distance from thecenter to the poles. This is a similar shape to a beach
ballresting on the ground, being pushed on from above.

b. The Earth does not have uniform density. As theplanet formed, the densest materials sank to the center of theEarth. This created a dense iron core. Meanwhile, the lighterelements floated to the surface. The crust of the Earth
isconsiderably less dense than the core.

c. While the Earth currently has a period of 24hours, it is in fact slowing down. Once it was rotating muchfaster, giving days that were closer to 20 hours than 24 hours. Inthe future, it is expected that days will become longer.

energy can be converted from one form to another, but it cannot be created or destroyed in ordinary chemical or physical means. do not understand what you are asking but hope this

bacteria that live on the ocean floor are sustained by phytoplankton. phytoplankton, microscopic marine photosynthetic organisms, have a vastly significant role to play not only in the marine food web of which they’re part of, but also on a more global scale. despite their infinitely small size in comparison to other marine organisms, these tiny creatures occupy an immensely important ecological niche: they are the foundation of the marine food web, and as primary producers, play key roles in supporting all other organisms in the marine environment, as well as in the regulation of the earth’s climate through the sequestration of carbon, oxygen production, and other related processes. phytoplankton account for roughly half of all global primary productivity; therefore, their significance extends far beyond the marine environment alone. there is an intriguing sense of irony in the realization that these tiny living beings that often live out their existence unnoticed and undetected by the rest of the world, have such a far-reaching impact on the lives of virtually all other living organisms on the planet, particularly on those in the marine environment. the world that we have become accustomed to has been and is continuously shaped by the workings of these miniscule yet vital “plants of the sea”.

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