Wheeled vehicles are used to carry garbage and take it to the low lying areas. Hence, garbage truck is the correct answer.

Residential waste includes plastic, food waste etc. Industrial and municipal corporations are other sources which produce waste.

If the rotting is complete, the colour of the garbage turns black and there will be no foul smell. If the garbage has not changed at all or there is foul smell, it means garbage is not rotten completely. If the rotting is not complete, cover the bags again with soil and allow bacteria to act on them.

Hence, option (2) is the correct answer.

There are two types of wastes: (i) Biodegradable (ii) Non-biodegradable Biodegradable waste can be decomposed by bacteria. Plastics can be recycled. The recycling rate for plastic bottles is 57% and for pots, tubs and trays, it is 30%. Glass is one of the few materials that can be recycled infinitely without any loss in strength, purity or quality. 

Wrapping waste in polythene bags is the correct answer for this question as polythene bags are non-biodegradable waste.

Four different coloured rubbish bins: (a) Organic waste (plants and animal waste) – Green (b) Paper – White (c) Metal or glass waste - Blue (d) Hazardous – (for batteries, etc) – Red

 Four different coloured rubbish bins: (a) Organic waste (plants and animal waste) - Green (b) Paper - White (c) Metal or glass waste - Blue (d) Hazardous - (for batteries, etc.) - Red Hence, the correct answer is blue.

Burning of garbage produces smoke and poisonous gases, which are injurious to living beings. Hence, burning of garbage should be banned as it pollutes the environment.

Plastic bags are non-biodegradable material. Such materials will not get decayed. If eatables are stored in plastic bags, this may contaminate the food stuff because plastics are made of poisonous dyes which get absorbed into the food and make it unfit for human consumption.

Wooden logs can be reused or repaired, but wood cannot be recycled. Animal fur can also be reused, but cannot be recycled. Hence, option (1) is the correct answer.

Plasticware can be used in the kitchen to store food items. 

 Salt-containing food should not be added in vermicomposting.

 The best way to minimise plastic waste is to make minimum use of plastic bags and other plastic commodities.

 The 3 R's are: Reuse, Reduce and Recycle.

 Aluminium wrappers cannot be converted into compost. Only organic matter can be converted into compost.