Briefly mention about 'Swachh Bharat Abhiyan'. When was it launched and what are its objectives?

Define the following terms:

(a) Pollution

(b) Waste

(c) Air pollution

(d) Oil spills

(e) Pesticides

(f) Sanitary landfills

(g) Noise

Distinguish between Biodegradable and Non-biodegradable waste

Distinguish between Smoke and smog