Transcription: Many rivers, lakes and seas look clean and attractive but looks can be deceiving for most water pollution is invisible. Rivers are used to carry pollution away from its source out of sight and out of mind. Excess fertilizers that farmers have applied to their crops often end up in the water. They cause algal blooms resulting in the death of many fish. Industries are often concentrated along the banks of rivers or on the coast. This is so that they can discharge their waste easily into the river or the sea. Oceans and rivers are also used for transporting goods around the world. Even though the ...