Man and His Environments

Chapter 25: Man and His Environments (29 videos)   (Practice Test)

25.1: Biogeochemical Cycle(Practice Test)

1. Biogeochemical Cycle
2. Water cycle
3. The Nitrogen Cycle
4. More on Nitrogen Cycle

25.2: The Flow of Energy(Practice Test)

1. Concept of Trophic Levels
2. Concept of Productivity
3. Energy Relations Between Different Trophic Levels
4. Ecological Pyramids
5. Ecological Pyramids Biomass
6. Ecological Pyramids Number

25.3: Ecological Succession(Practice Test)

1. Succession
2. Kinds of Succession
3. Secondary Succession
4. Stages of Succession
5. Xerosere
6. More on Xerosere

25.4: Human Impact on Enviroment(Practice Test)

1. Nuclear Power
2. Carbon Dioxide and Global warming
3. Acid Rain
4. Mechanism of Acid Rain
5. Effect of Acid Rain
6. Ozone Depletion
7. Ozone Depletion due to Oxides of Nitrogen and Sulphur
8. Role of Chlorofluorocarbons in Destroying Ozone
9. Effect of Ozone Depletion

25.6: Environmental Resources and Depletion(Practice Test)

1. Renewable and Non-Renewable Resources
2. Renewable Resources (Land and Wildlife)
3. Conventional Energy Resources
4. Non - Conventional Energy Resources