In all of the experimental arrangements the mass of the knife-edge clamp is ignored. Is this an approximation because its mass is relatively small and can therefore be ignored, or is there some reason that it makes no contribution at all to the torque? Explain. 3) Measure the mass of the Aluminum "unknown" using the torque apparatus, and the volume using the vernier caliper. Then determine its density and quantitatively compare that density to the Aluminum density value listed in Appendix II of the lab manual (show all work). Your result should be a little bit high; what would be the primary cause of such an error? Explain

the assestment will probley apele with cause and effect

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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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