use of organic fertilizers (manure) in farming
''Why is this stream so polluted?'' or ''The school's bathroom is very polluted''
It could be industrial pollution. Or it could be that the river is cloudy with a mixture of yellow sand and silt washed down after heavy rains further up stream.
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poisoning from elemental mercury is most likely due to inhalation of mercury vapors. The danger lies in the fact that after it is inhaled into the lungs in vapor form, mercury passes into the blood stream.
portion of recycle stream which has been removed in order to prevent accumulation in system.
deforestation, pollution and stream habitat destruction
Pollution or waste that is generated from a business is called industrial pollution or industrial waste.
a stream is most likely widen by erosion
Water pollution that goes with water down a storm drain that goes straight to a river or stream.
The slope or gradient of the stream is the most likely factor to affect the amount of erosion. Steeper slopes result in higher velocities, which in turn increase the erosive power of the stream. A steeper slope also allows the stream to carry larger sediment and potentially cause more erosion.
The oxygen content of a river or stream is likely to be highest at the source. The source of the river or stream is where it originates.
Frogs have definitely died from water pollution. they are amphibians so whatever pollution is in the water gets absorbed into their blood stream and kills them.
yes
Most likely a fast moving stream.
Pollution enters the system by respiration. When you breathe in your body uses the oxygen in the "air". But when pollution is in the "air", your body takes that in and enters the Ovules of the lung and enter your blood stream.
over a drainage divide
False acid shock is a sudden change in the acidity of a stream or lake.