Lesson 1:                                           

When water becomes undrinkable and harmful for our existence, we call it polluted. Water is polluted in many ways. Firstly, farmers often use chemical fertilizer and insecticides in the corn fields. When rain and flood water wash away these chemicals into the rivers, canals or ponds and water gets polluted thereby. Secondly, mills and factories throw their waste into the rivers and canals and thus pollute water. Thirdly, ignorant people pollute water by throwing human waste and filth from drains and unsanitary latrines. Water vehicles also pollute water by dumping oil, food waste and human waste. By drinking polluted water, we suffer from fatal diseases-and die. Water pollution may cause serious environmental disaster. To minimize water pollution, various measures may be taken. However, making people aware of the dangers of pollution is the best measure to reduce water pollution to an optimum level. 

                                                           Lesson 2:                                                      

Visual pollution is an aesthetic issue and refers to the impacts of pollution that impair one's ability to enjoy a vista or view.

Visual pollution disturbs the visual areas of people by creating harmful changes in the natural environment. Billboards, open storage of trash, antennas, electric wires, buildings, and automobiles are often considered visual pollution. An overcrowding of an area causes visual pollution. Visual pollution is defined as the whole of irregular formations, which are mostly found in natural and.

Effects of exposure to visual pollution include: distraction, eye fatigue, decreases in opinion diversity, and loss of identity.

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2) 

Visual pollution is an aesthetic issue and refers to the impacts of pollution that impair one's ability to enjoy a vista or view.

Visual pollution disturbs the visual areas of people by creating harmful changes in the natural environment. Billboards^[1],^[2] open storage of trash, antennas, electric wires, buildings, and automobiles are often considered visual pollution. An overcrowding of an area causes visual pollution. Visual pollution is defined as the whole of irregular formations, which are mostly found in natural and.^[3][4]

Effects of exposure to visual pollution include: distraction, eye fatigue, decreases in opinion diversity, and loss of identity