Study the picture given below and answer the following question: Name one pollutant that causes the above pollution.

The contamination of water bodies usually caused due to human activities is called water pollution. The causes of water pollution are domestic waste, industrial effluents, insecticides, pesticides and detergents, fertilizers. As these pollutants get mixed with the water the aquatic animals will not get sufficient oxygen gas for respiration which ultimately leads to the death of aquatic animals.

Study the picture given below and answer the following question: Mention the impact of this pollution on human health.

The contamination of water bodies usually caused due to human activities is called water pollution. The causes of water pollution are domestic waste, industrial effluents, insecticides, pesticides and detergents, fertilizers. As these pollutants get mixed with the water the aquatic animals will not get sufficient oxygen gas for respiration which ultimately leads to the death of aquatic animals. In humans, consuming contaminated or polluted water causes typhoid, cholera, hepatitis and various other diseases.

Study the picture given below and answer the following question: State one measure to control this pollution.

The contamination of water bodies usually caused due to human activities is called water pollution. The causes of water pollution are domestic waste, industrial effluents, urbanization, fertilizers. The steps to prevent water pollution are as follows: Trees or plants should be planted along the banks of rivers. Pollutants from industries should not be discharged into the water bodies.

Study the picture given below and answer the following question: What is a ‘Pollutant’? Explain the term.

A pollutant can be defined as a substance introduced into the environment that has adverse effects. The causes of pollution are domestic waste, industrial effluents, insecticides, pesticides and detergents, fertilizers. There are different types of pollutants: Water Pollutants, Air Pollutants, Soil Pollutants, Noise Pollutants. All living organisms and ecosystem gets affected due to pollutants. They increase the earth’s temperature that causes global warming.

Give the biological reasons for the following statement: Water pollution is a major cause of concern in our country.

The addition or introduction of unwanted or undesirable contaminants into the water is called water pollution. It is caused due to improper disposal of sewage, oil spills and water coming from the industries. Industrial waste is discharged into lakes and rivers by using fresh water making the water contaminated. Water pollution increases the biological oxygen demand of the water.

Give suitable biological reasons for the given statement: Acid rain is harmful to the environment.

The acid rain falls through polluted air, it comes across chemicals such as gaseous oxides of sulphur, oxides of nitrogen(this gas is 78% in atmosphere), mists, of hydrochloric acid and phosphoric acid etc. Its pH lowers from 5.6 to 3.5 sometimes it becomes as low as 2. The effects of acid rain can be seen on crops, trees, and many resources this can destroy the livelihood of many people. Many people get affected by acid rain directly but indirectly. It destroys the shades of the marbles for example Taj Mahal got destroyed by acid rains.