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Nile River Delta Lithograph Answers Why does the color of the water change here? The color change seen here along the shoreline is most likely due to the presence and concentration of phytoplankton, sediment, or dissolved organic chemicals. Phytoplankton are very small, single-celled, ocean-dwelling plants that contain a chemical known as chlorophyll. Chlorophyll is used by plants to convert sunlight into nutrients and is responsible for the greenish color, seen here along the shoreline. What are the gray patches inside the Nile River Delta? The gray patches that appear inside the river delta are densely populated settlements. Notice that the settlements are spread across the area fairly even, showing the tendency of humans to organize spatially in regular patterns. What factors influence the location of agriculture? Environmental settings, as well as social factors can influence the location of agriculture. Some of these contributing factors include water availability, soil composition, humidity, and socioeconomic demand for the product. View the lithograph (pdf). |
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