NCERT 10TH CLASS SCIENCE CHAPTER MANAGEMENT OF NATURAL RESOURCES
The human population is increasing at a very fast rate. Growth in population takes place in geometrical
progression whereas increase in food production takes place in arthmetic progression as given below:
Geometric Progression : 2 ® 4 ® 8 ® 16 ® 32 (Population growth)
Arthmatic Progression : 2 ® 4 ® 6 ® 8 ® 10 (Increase in fond production)
As is clear from the above figures, population grows at much faster rate than the increase in food production.
As a result there is always an increase in demand for the basic requirements of man, that is, food, water, clothes and shelter.
These requirements of man are fulfilled through the natural resources such as minerals, forests, groundwater, soil and through agriculture.
For example, man uses wood obtained from forests as fuel as well as for construction of houses. Man uses ores obtained from the
earth lithosphere for extracting metals. Coal, petroleum and natural gas are important resources of earth, which satisfy
the energy requirements of man. The industrial revolution has created a greater demand for the various raw materials such as minerals,
petroleum and coal than was ever required before. In order to satisfy the ever-increasing demands of food, water, clothing and shelter man
has exploited the natural resources to such a greater extent that it is creating an ecological imbalance in nature.
In this chapter we will discuss about management of our natural resources like forests, wildlife, water, coal and petroleum for sustainable
development. Management of the natural resources is a global problem. There are various national and international laws,
regulations and acts towards protecting our environment.
NEED OF CONSERVATION
With the coming up of advanced science and technology more and more natural resources are being used up. Old villages,
hills etc., are being converted to cities. Agricultural landsare being used for constructing big hotels and industries.
To generate electricity, more and more dams are being constructed. To maintain a balance between environment and
development, there is a need for sustainable development. This means that present needs for development should be fulfilled
in such a way that options for future generations are not closed. To achieve this various points have to be kept in mind.
• Ecological balance has to be maintained.
• Efficient use of resources has to be carried on.
• Planting of more trees is required.
• Conservation of various natural resource is must.
• Green patches have to be interspersed between concrete buildings.
• National parks should be established.
• Preventing air, water and land pollution.
• Proper disposal of wastes.