Given below is a representation of type pollution. Study the picture and answer the question. Name the type of pollution shown in the picture.

The contamination of air by harmful gases, dust and smoke that affects plants, animals is called air pollution. The effects of air pollution are global warming, acid rain, ozone layer depletion, etc. The type of pollution shown in the picture is air pollution.

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.

Mention any two objectives of ‘Swachh Bharat Abhiyan’.

Swachh Bharat Abhiyan is to spread the awareness of cleanliness and its importance. The idea of Swachh Bharat Abhiyan is to provide basic sanitation facilities like toilets, solid and liquid waste disposal systems, village cleanliness, and a safe and adequate drinking water supply to every person.

Differentiate between the following pairs on the basis of what is mentioned in the brackets: Biodegradable waste and Non-biodegradable waste (One example)

Characteristic Biodegradable waste Non-biodegradable waste Definition Biodegradable wastes are those substances that can be broken down by microorganisms such as bacteria, fungi, etc into harmless and non-toxic substances. These microbes are called decomposers. Non-biodegradable wastes are those substances that cannot be broken down by microorganisms. Examples Paper, vegetable peels, etc. Plastic, polythene bags, etc.