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Punjab Board > 10th > Biology (Total Videos: 147)
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Chapter 16: Man and His Environment (22 videos)

16.1: Levels of Ecological Organization
1. Ecology, Community, Population, Ecosystems , Biosphere
2. Components of Ecosystem
 
16.2: Flow of Materials and Energy in Ecosystem
1. Flow of Energy
2. Flow of Materials
3. Ecological Pyramids
4. Ecological Pyramids Biomass
5. Ecological Pyramids Number
6. Biogeochemical Cycles, Carbon Cycle
7. Nitrogen Cycle, Formation of Nitrates
8. Assimilation and Denitrification
 
16.3: introeractions in Ecosystems
1. Predation
2. Symbiosis
3. More on Symbiosis
 
16.4: Ecosystem Balance And Human Impact
1. Global Warming
2. Acid Rain
3. Deforestation, Soil Erosion
4. Overpopulation, Urbanization
 
16.5: Pollution; Consequenses And Control
1. Air Pollution
2. Water Pollution
3. Land Pollution
 
16.6: Conservation Of Nature
1. 3 R, Reduce, Reuse and Recycle
2. Basic Information about Dengue Fever
 

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