Development is the positive and progressive changein the perception, social system, way of livingeconomyand institutional setup.

The sum of biotic and abiotic components present inthe surroundingincluding socio-economic physical andbiological aspectsis called environment.

The ultimate goal of development is progressive transformation of economy and social system and the satisfaction of human needs and aspirations.

Any two principles of sustainable development are:
- Conservation of eco-system.
- Population management.

Any two examples of social security are listed below:
- Old age allowances.
- Widow allowances.

The Brundtland commission of 'Our common Future' was published in 1987 AD.

The importance of regional balance are listed below:
- Appropriate utilization of resources.
- Balanced development of the country.

The reasons behind natural imbalance in our country are:
-No proper implementationof plans is policies.
-Instable, government.
- Improper allocation ofbudget.
-Difficulttopography.
-Illiteracy, ignorance& poverty.
-Lack of capital & technologies.
-Centralizedgovernmentsystem and authority.
-Integrated powerand authority.

Population, environment and development are the multi-disciplinary subjects. Due to its multi-disciplinary nature, these subjects are interrelated and interdependent toeach other. Environment is the sum of bioticandabiotic componentspresent in the sounding includingsocio-cultural, economic, and biologicalaspects.Similarly,population is the total number of people living ina specific area during a particular time. In the sameway, development is the positive and progressivechange in the society....

The positive and progressive change in the perceptionsocial system, way of living, economy andinstitutionalsetup is called development.
The importance of it are listed below:
-It helps in proper utilization of resources.
-It can be the source of employment.
-It contributes in nation developmentboosting economy.
-It helps in development of infrastructures.
-It helps to conserve cultural heritages.
-It helps to foster social justiceand prosperity.

Development work are necessaryfor the development ofthe nation because of thefollowing reasons:
-It helps in proper utilization of resources.
-It generates employment.
-It reduces poverty.
-It boosts nationaleconomy.
-It makescountry Independent.
-It contributes in infrastructural development.
-It helps in conservation of cultural heritages.
-It helps in cultural reforms and social development.

The proportional development in all de regions of thenation is considered as regional balance in development.It is necessary in order to appropriately utilize theavailable human resources. For example, conductionof developmental works such as construction of roads,bridges, buildings, etc. in different regions of country tofoster nation's economy and betterment of thecountry.

The main objectives of sustainable development are:
-Conservation of environment.
-Rationale use of natural resources.
-Conservation and promotion of wildlife.
-To fulfill human needs.
-To alleviate poverty.

Environment and development are interrelated & interdepended to each other. Each and every developmentalactivities areconducted withinthe environment utilizingthe environmental resources. There is never ending interaction between environment and development. The healthyexistenceof environmental resources contributes in sustainabledevelopment and sustainable development again have thelong term vision of preserving environment. Environment isthe source of many things for the development....

The development process that aims to meet the needsof present generation without compromisingthe abilityof future generations to meet their own needs withoutanydeteriorationsto the environment is called sustainabledevelopment.
The principles of sustainable development are:
-Conservation of Ecosystem.
-Sustainable development of Society.
-Conservation of Biodiversity.
-Population management.
-Development of human resources.
-Increase in peoples participations.
-Conservation...

We know, the proportional development in all regions isconsidered as regional balance of development. Decentralizationof developmentand availability of all sorts of facilitiesin every regions is the characteristicsof regional balancein development.When the development activities areequaland its speed is same in every regions, then thearea has balanced development. The facilities available inother places are available in one'sown place and she/he canutilize it in the same place if the balanced...