11. With respect to sewer systems, describe the flow (and final resting site) of
ID: 153510 • Letter: 1
Question
11. With respect to sewer systems, describe the flow (and final resting site) of objects, such as grease, ground chicken bones, and plastic pieces, that are discarded in a sink or toilet.
12. What happens to the nutrients in ground-up, discarded food sent down the drain?
13. With respect to the hydrologic cycle, describe the flow (and final resting site) of materials, such as pesticides and fertilizers, applied to lawns.
14. Water from streamflow never crosses a continental divide. (T/F explain your answer)
15. All of the water in a stream originates from precipitation within its watershed. (T/F explain your answer)
Explanation / Answer
11.
Grease, ground chicken bones, and plastic pieces, that are discarded in a sink or toilet when reach municipal wastewater treatment plant, they are collected by the screening chamber and the Grit chambers. They're effective in separating waste as low as 0.2mm in diameter.
12.
the nutrients in ground-up, discarded food when sent down the drain and enter municipal wastewater treatment plant, they're eaten up by microorganisms in the biological process that take place after primary sedimentation of wastewater. Since these items are organic in nature, microbes consume them and are hence removed from the water.
13.
Since the processes like precipitation, evaporation and condensation involve only water molecules, pesticides and fertilizers don't participate in these processes.
But, due to movement of pesticide dissolved water and finally meeting a bigger river or sea, these pesticides finally rest there and are consumed by animals in the form of pesticide dissolved water.
14.
The statement is true.
The continental divide follows a simple rule. It is a line, often in the mountains, that shows water the way downhill to the ocean. Like a boundary between two kingdoms, the side of the continental divide that water falls on determines which sea will receive its tribute. No river is allowed to cross the continental divide, and no water is allowed to deny its rule
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