what are the elements of water pollution?

Question

water pollution

Answer 1

Try defining pollution as there are natural and artificial examples of "polluted" waterways. If this is a chemistry question then look at input sources which will involve generally agricultural runoff (fertilisers, pesticides/herbicides, suspended particles) urban stormwater sources which are generally the most toxic as they are infrequent and released into the system over a short time span, sewage, biological bilge (introduced species) direct spills and contaminants from earthworks such as acid sulphate leachates, dump site plumes etc.

Answer 2

Oxygen, of direction, is of severe magnitude to residing organisms. this is critical submit to in innovations that oxygen is a effective poison, and that too plenty may be a nasty element. we are in all likelihood fortunate that the ambience has in basic terms 21% O2; astronomers on different planets have in all likelihood concluded that existence can not exist in the worldwide using severe stages of noxious oxygen. from now on O2 and it'd in all likelihood start to poison the technique of photosynthesis (extremely, it already does to a factor, the reaction is declared as photorespiration). In water, although, this is easy for O2 concentrations to become depleted in close by aspects, alongside with in sediments or the backside of stagnant bodies of water. those close by aspects of oxygen depletion function significant refugia for the various ecologically significant anaerobic organisms, and for that reason should not be considered immediately as "undesirable". Nitrogen fixation, working example, is notoriously comfortable to O2; root nodules of legumes and heterocysts of Cyanobacteria are structures equipped to exclude O2 so as that nitrogen fixation can take place.

Answer 3

physical impurity - like suspended particles
dissolved impurity - like chemicals and salts, gases,
germs and other bio- organisms- bacteria, virus, spores, algae, fungi, yeast.

Answer 4

Everything that is not H2O........