what is eutrophication? why is it bad?
538744
"eutrophication is water pollution caused by too much plant nutrients, its bad because, well, what isn't bad about pollution???
939636
the human race is slowing polluting and killing the earth. if you smoke in an enclosed room with a potted plant, even though the soil's good and well watered, it will die because it is slowly being suffocated and stripped of its resources. the earth is being polluted and is being stripped of its resources. plus, we're taking away faster than we can put back. so you probably wouldn't want to drink the plant's water and be in the same room as it. i hope this draws a clear picture to help you better understand.
104763
well, i do know there's this blue chemical called biochemical oxygen demand(BOD) which is used to see how polluted water is from different sources. like, if you compare drain water and pond water. so if you put few drops in each water, and wait for one day, you'll realise that drain water isnt as blue as pond water coz drain water is more polluted. since there are more waste compared to pond water, so there'll be less oxygen. so yeah.
677256
I don't really know.... my guesses would be regulating the fish population. I think a negative effect might be that fact that because they're an endangered creature wherever they build their nests, they can't be moved regardless of how inconvienet it is to people.
859078
Water safety is characterised by microbiological, physical, chemical and radiological quality \n\nA poor water supply system can have negative health effects on people. Poorly treated or managed drinking water systems can result in an increase in illness (most likely gastrointestinal illness). \n\nPeople can also be more susceptible to endemic micro-organisms as they are potentially exposed to different, or higher, levels of pathogens .\n\nInfectious and parasitic diseases are still the principal cause of death and illness throughout the world, mostly because of the poor quality of water, and diarrhoea the first cause of morbidity.
328762
Not really naive. Take a look at Venice, it is both an example of how bad a society can screw up it's environment and how little of an impact that change can have on society. Venice was originally above the water level. The Venetians withdrew too much water form the ground; this caused the ground level to sink below sea level as the sub-strait compacted. The result: a city with canals that tourists travel from all over the world to see. Man made disaster? Hardly. Never underestimate humans ability to screw up their environment and their ability to adapt, even to prosper form it. \n\nSo it is going to get 1 or 2 degrees warmer; who cares, nothing lives at the ice caps any way.
193811
Heterotrophic nutrition is the nutrition of organisms which need ready made complex organic molecules, they obtain these wither directly from plants, or from organisms which have fed on plants. Thus heterotrophic organisms are the consumers in an ecosystem.
674848
It could be that lol or it may be due to the bacteria that lives within the body of water, such as blue algae. :)
715250
Its another part of our evolving lives. Its easily cured however, just think about it. The ice caps melt and sea level rises. Fair enough, Our resovoirs are empty, so if we desalinate sea water and use it for washing etc, we will be using it as fast as the ice caps are losing it, Thus leaving a bit of fresh water to drink and stopping us all from drowning, i dont know why the politicians didnt think of it!!!
905009
Harmful algal blooms are occurring more often and in more regions across the nation than ever before. These intense population explosions of algae can kill marine life, clog waterways, and create conditions that impact human health. While algal blooms are a natural phenomenon, it is believed that human activities, such as nutrient excess in runoff, may be triggering their increasingly common occurrence.
194216
Phosphate is an essential nutrient to plants, including algae. In bodies of freshwater it is often a limiting nutrient, meaning that the availability of phosphate is what controls the amount of plant life in the water. When this balance is upset by human input of phosphates either from fertilizer runoff, or once common phosphate based detergents (now outlawed in the US), there are algal blooms. These algal blooms soon die off and the resulting decomposition process will often consume all available oxygen in the water, killing fish and other aquatic life. This is known as eutrophication. Eutrophication also happens naturally over thousands of years and is part of the natural aging process of a lake.\n\nPhosphate moves in a cycle like many other nutrients. It comes from erosion of rocks and is picked up from solution by plants. From the plants it moves up through the food chain, or may return directly to soil or water through decay of the plant. It accumulates in sediments, which eventually become rock and the cycle is repeated.
666152
When toxic substances enter lakes, streams, rivers, oceans, and other water bodies, they get dissolved or lie suspended in water or get deposited on the bed. This results in the pollution of water whereby the quality of the water deteriorates, affecting aquatic ecosystems. Pollutants can also seep down and affect the groundwater deposits.\n\nWater pollution has many sources. The most polluting of them are the city sewage and industrial waste discharged into the rivers. The facilities to treat waste water are not adequate in any city in India. Presently, only about 10% of the waste water generated is treated; the rest is discharged as it is into our water bodies. Due to this, pollutants enter groundwater, rivers, and other water bodies. Such water, which ultimately ends up in our households, is often highly contaminated and carries disease-causing microbes. Agricultural run-off, or the water from the fields that drains into rivers, is another major water pollutant as it contains fertilizers and pesticides.
599634
Because sewage is made up of a lot of hydrocarbons.  with increasing distance from a sewage discharge, the sewage is more likely to be diluted by the ocean water.  Therefore, the "relative" organic carbon content decreases away from the discharge area.
319715
B, Algal blooms first create some dissolved oxygen, but then they over populate since they're free floating, block the sun, use all the DO and the fish die. HA! I will not fail that AP bio exam!
626009
It makes them grow too fast and bloom.\n\nNitrates such as potassium nitrate (saltpeter) and ammonium nitrate are important nitrogen carriers in fertilizers; lesser amounts of calcium nitrate, magnesium nitrate and sodium nitrate are applied. These nitrates must be used quickly by plants because they are easily lost through leaching or denitrification by bacteria. Nitrate pollution has become an environmental issue in rivers and oceans.  High levels of nitrate in water can potentially cause the death of fish. Over 30PPM of nitrate can inhibit growth, impair the immune system, cause stress, and reduce energy levels. The principal pathway of entering aquatic systems is through surface runoff from agriculatural or landscaped areas which have received excess nitrate fertilizer. After entering the receiving waters nitrates also can induce algal blooms and eutrophication, causing other ecosystem modification in addition to the mortality effects stated above.
568488
lack of water\navailaible water is not clean\nratio of popuation to water availaible is high
405069
Honestly, the effects are endless. I'm currently working on this topic for my Master's (that what I should be doing right now) and when you really start to delve into the study of it, it's really quite disgusting because it affects everything we rely on to live.  But to sum it up, when the land is polluted, it really leads to pollution, destruction, and loss of everything else. The pollution makes it way into our water sources, kills plants, and  consequently, that is one cause that leads to the loss of animal species.  Polluted land is often treated with chemicals to "clean it up" that ends up in the soil and poisons our food sources.  The issue really is complex, but I encourage you to study it further.  You won't look at this world the same.