Answer:
Wastewater treatment
Explanation:
The major aim of wastewater treatment is to remove as much of the suspended solids as possible before the remaining water, called effluent, is discharged back to the environment. As solid material decays, it uses up oxygen, which is needed by the plants and animals living in the water.
<span>The <u>Cultural Landscape</u> is a
theory that states that the sum affects the human population has on the
environment. It means that any changes that the humans applied to the environment
will be experienced by them. There are a lot of places or things that humasn
affect the environment. An example of this is the pyramid of Egypt. The Egyptians
changed the topography of th land in the areas where pyramids were built. At the
same time, it also affected their lifestyle. </span>
Convection currents occur in the MANTLE. The mantle is the second layer of the earth after the crust. The mantle is approximately 2900 km thick. Convection currents are triggered or fueled by the heat from the Earth's core.
The part of the mantle closest to the core gets heated. It then becomes less dense than the layers above so it rises. When this rising plume interacts with the crust it cools and becomes more dense than the layers below and so it sinks and this circular motion continues to form convection currents.
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Http://www.lcps.org/cms/lib4/va01000195/centricity/domain/4153/study%20guide%20-%20geography%20unit%201%20answer%20key.pdf
