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Freely suspended forms are called phytoplankton; forms attached to rocks, stems, twigs, and bottom sediments are called periphyton. Lake Superior Green water near Duluth. On the equator in the middle of the day light rays may hit the water at precisely right angles. What will happen to the transmission of light as more s olids are suspended in water? It is lowered into a section of shaded water until it can no longer be seen and then lifted back up until it can be seen once again. As sunlight strikes water, it is reflected from the surface much like a mirrorscattered by particles in the water, and absorbed by the water itself.

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Whatever it is you measure; a particular physical, chemical, or biological property that is being measured.

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Higher aquatic plants; in the sense of "higher" evolutionarily than algae and having roots and differentiated tissues; may be emergent cattails, bulrushes, reeds, wild ricesubmergent water milfoil, bladderwort or floating duckweed, lily pads. Thus, life in the water requires special adaptations. Different lake zones in reference to available sunlight. Which would take more wind energy to mix, a lake with a shallow thermocline or a deep one? Zooplanktonsuch as the shrimp-like Daphnia and Bosmina, are the primary consumers because they eat the primary producers.

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