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Please answer question 20. 0FB6D8E2-AF79-4A98-9548-F64027864ABF.png


Figure 2. Gulf of Mexico sediment loading on 10 November 2009. [NASA Link 113—3] 20. The murky brown waters along the Gulf coast in the northeast are mixing with the
bluish—greenish waters further into the Gulf. The orientation of the sediment plume ex-
tending from the Mississippi River located under the clouds to the right in the image in-
dicates the river plume is likely a. dispersing directly southward into the Gulf
b. spreading westward along the shore As Figure 2 suggests. sediment transport from shore to sea can be affected by a combination
of processes including stream flow, tides, waves. near-shore currents, and bottom topography.
Summary Lithogenous sediment, owing its origin mostly to weathering and erosion of [are-existing
rock, accounts for about three-quarters of all marine sediments. It and other marine sediment
deposits are particularly valuable because they record changes in the various Earth subsys-
tems over the millions of years since the formation of the present ocean basins.

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