Did you know that most of the causes of pollution including sewage and fertilizers contain nutrients such as nitrates and phosphates?

I am reading your minds and all of you might be asking," So how on earth could nutrients POLLUTE?"

Well, take off your puzzling faces and open the memory file in your brains when we tell you all about it.

Nutrients are well, beneficial to the growth of aquatic plants and algae. However, due to the excess levels of the nutrients, it would of course, cause excessive growth of the aquatic plants and algae.

This will clog up our waterways and hence, use up the dissolved oxygen as they decompose and prevent sunlight to enter the deeper waters.

This, in turn, affects the respiration ability of aquatic organisms residing in the waters.

Silt and other suspended solids, such as soil washed off from plowed fields, construction and logging sites, urban areas and eroded river banks entering the water bodies when it rains can also cause pollution.

Just so you know, we have learnt all these in Geography. You might have too. (:

However, you might have not come across this word here, eutrophication. This is a process where water bodies undergo under natural conditions.

It is a process whereby large water bodies turn old over thousands of years and become more productive. *Amazing.*

However, everything has its disadvantages as well, as people make use of its advantages to various cultural activities. Thus, it has greatly hasten this process and beginning to cause water pollution due to increased levels of plant nutrients.

When these sediments enter the water bodies, it affects the productivity of water plants, water depth, lives of aquatic organisms and their environment.

Pollution in the form of organic material enters waterways in many different forms such as sewage, leaves and grass clippings, or as runoff from livestock feedlots and pastures.

When natural bacteria and protozoan(what's this word here?) in the water break down this organic material, they begin to use up the oxygen dissolved in the water. Due to this, fishes and bottom-dwelling animals cannot survive when levels of dissolved oxygen is decreased. When this occurs, it kills aquatic organisms in large numbers which leads to disruptions in the food chain.

Protozoan:

However, personally i feel that water pollution not easy to clear once it is polluted as it may be spread to other parts of the world easily since water surrounds the countries we live in. It is pretty dangerous though because it will definitely affect us in someway or another. For example, fishes that die or are caught unknowingly by fishermen nearby would sell them to customers who consume them and become ill. No one would want that right?

Opinion 2 from another member of e.TEAMM:

I will keep this straight! Many people say that, those who start the pollution, must stop it themselves. What's the point of saying that? Although it is true that those who started the trouble, must end it. However, we all share the same mother earth. We step on the same land and look up to admire the same skies.

SO EVERYONE MUST PLAY A PART! We all make a difference.