(i) Recycling : Today there is great danger against the human kind because of population growth, indiscriminate use of things and absence of protection to natural resources. We have made irreversible and harmful changes in the environment which sustains our life. If we do not get a speedy solution for this problem, this world will not remain worth living for our situation, and will have to introduce changes in our lifestyle and cultural customs.
Recycling is such a safe and simple course in which instead of 'use and throw away' policy, that increases the pollution problem, the things are brought into reuse after the process of recycling. The aluminum cans of cold drinks can be melted and used for manufacturing aluminum and other products. Similarly papers, glass, clothes, metals can also be brought into reuse. Moreover the shortage of water is increasing day by day. The conservation of water becomes very important issue these days. The large quantity of water flowing into the QC-gutter can be reused. The sewage water can be flushed into the river after making it safe by treatment.
(ii) Energy Conservation : Misuse and abuse of natural resources is the cause for the rise of environmental problems of this planet. The misuse of petroleum products is the most prominent amongst them. The illustration of America is relevant here. The USA having only five percent of the world's population consumes twenty five percent of the commercial energies on this earth. The outcome of the misuse of resources on this planet of the universe is that the traditional supplies of most of the resourcesare getting exhausted. Most of the industries in the world run on oil. The shortage of petroleum oil will have a dramatic effect on many aspects of our life. 'Nations shall have to use the natural resources very carefully and avoid its misuse. Moreover, it needs to make a planning for protection of resources for their use in future and for safe environment.