population growth

POPULATION GROWTH

POPULATION GROWTH ???

Impacts of population growth on physical environment.

Physical environment means – non living environment or the land, air, water, soil and minerals.

Impacts of population growth on biological environment.

Biological environment comprises of human, biological systems, flora and fauna, living creatures from moth to midgets.

IMPACTS OF POPULATION GROWTH

Most critical resources for human life.Population Growth Utilization + Overuse + Misuse of physical resources

Includes impacts on fresh water, owen valleys, waste management, allocation of resources, changing of consumption pattern, rising demand for energy etc

IMPACTS ON PHYSICAL ENVIRONMENT

The biological components are bound to suff er the consequences.

Natural processes have been altered seriously that have caused serious imbalances in ecosystems.

Includes impacts on destruction of habitats, water crisis, Generalization of waste, endangerment to species, health condition etc

IMPACTS ON BIOLOGICAL ENVIRONMENT

5 to 7 million hectares of agricultural lands are lost to accelerating land degradation and rapid urbanization.

 2 billion hectares is degraded as a result of overgrazing and poor farming practices.

Another 16 to 20 million hectares of tropical forests and woodlands are lost each year.

 Water scarcity defined as less than 1,000 cubic metres per person per year.

climate experts worry that continued increases in atmospheric concentrations of CO2 – already 28 per cent higher than pre-industrial levels .

POPULATION AND SUSTAINABLE DEVELOPMENT

Pollution is the introduction by man into the environment of contaminants that contains harmful substances

POLLUTION