unit 1
- Definition, scope and importance AND need of public awareness
- Natural Resources:
- Renewable and non-renewable resources:
- Forest resources:
- Use and overexploitation
- deforestation. Case studies.
- Timber extraction, mining, dams and their effects on forest and tribal people.
- Water resources: Use and over-utilization of surface and groundwater, floods, droughts, conflicts over water, dams- benefit and Problems.
- Mineral resources: Use and exploitation ‘environmental effects of extracting and using mineral resources, case studies.
- Food resources: World food problems, changes caused by agriculture. Fertilizer- pesticide problems, water logging, salinity, case studies.
- Energy resources: Growing energy needs, renewable and nonrenewable energy resources, use of alternative energy sources.
- Land resources: Land as resources, land degradation, man induced landslides, desertification
- Role of individual in conservation of natural resources. Equitable use of resources for sustainable lifestyles
unit 2
- Concept of ecosystem
- structure and function of an ecosystem
- producers, consumers and decomposers .
- Energy flow in the ecosystem
- Ecological succession
- food chains, food webs and ecological pyramids
- introduction, types, characteristics features structure and function of the following ecosystem
- forest ecosystem ,grassland ecosystem, Desert ecosystem, Aquatic ecosystems, ponds, stream, lakes, rivers, estuaries