NCERT Solutions Class 6 Science Chapter 16 Garbage In, Garbage Out

Ans : (a) The garbage which contains pieces of cloth, broken glass, aluminium
wrappers, polythene bags, nails, broken toys, and old shoes cannot be converted into compost by red worms. 
(b) Yes. A pit might contain other soil microbes such as bacteria, other species
of earthworms such as brandling worm and red wiggler worm. 
 

Ans : (a) Proper disposal of garbage should be a concern of every citizen, and not just of the government. Each and every individual must reduce activities that pollute the environment. A lot of waste is generated from homes, offices, schools, hospitals, etc. It includes food waste, paper, plastic, glass, metal, etc. Therefore, it is required that every individual must reduce the production of wastes and must help in the proper disposal of these wastes. 
(b) Yes, it is possible to reduce problems related to disposal of garbage. Here are some steps that can be observed by every individual to reduce the problem of garbage disposal. 
(i) Avoid using plastic bags. Encourage shopkeepers to use paper bags or always carry a cloth or jute bag while shopping. 
(ii) Save paper. Use both sides of paper to write. 
(iii) Use separate bins for recyclable and non-recyclable waste. 
(iv) Kitchen waste that includes fruit and vegetable peels, waste food, tea leaves, etc. can be used to make manure. 
(v) Encourage your family, friends, and others to follow proper disposal practices. 

Ans : (a) Left over food can be collected and used to make compost. Compost provides nutrients essential for the growth and development of plants. 
(b) We would prefer to eat food in a banana leaf platter. This is because a leaf platter is a harmless substance that can be used to make manure by the process of
composting, whereas plastic plates cannot be converted into harmless substances by composting. They remain in the environment and create many problems. 

Ans : (a) All type of paper can be recycled. 
(b) It is impossible to find out the difference between a recycled and a new sheet of paper. However, it is believed that recycled paper is usually of low quality. 

Ans : (a) The different kinds of packaging materials commonly used includes: 
(i) plastic bags for carrying eatables or other household things 
(ii) cloth or jute bags for carrying fruits, vegetables, or other groceries
(iii) paper bags for carrying small groceries, packing of food, etc. 
(b) The usage of plastic bags must be reduced as packaging of cooked food items in plastic bags might affect our health. Also, plastic bags are non-recyclable and burning of plastic bags may release harmful gases that can cause many health diseases. 
(c) Packaging increases the amount of garbage as we keep on throwing the packaging materials carelessly on roads and other places. Also, since these packaging materials (mainly plastic covers) are non-recyclable, they keep lying on the roads and cannot be properly disposed off. Sometimes, they get into drains and sewer systems and block them, creating more problems.