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Man and His Environments
Federal Board > Class 12 > Biology (
Total Videos: 342
)
All Chapters
Chapter 14: Respiration
Chapter 15: Homeostasis
Chapter 16: Support and Movement
Chapter 17: Nervous Coordination
Chapter 18: Chemical Coordination
Chapter 19: Behaviour
Chapter 20: Reproduction
Chapter 21: Development and Aging
Chapter 22: Inheritance
Chapter 23: Chromosomes And DNA
Chapter 24: Evolution
Chapter 25: Man and His Environments
Chapter 26: Biotechnology
Chapter 27: Biology and Human Welfare
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Select a chapter above and press 'Show Content'. Click a video topic below to view.
Chapter 25: Man and His Environments (
29 videos
)
  (
Practice Test
)
25.1: Biogeochemical Cycle(
Practice Test
)
Biogeochemical Cycle
Water cycle
The Nitrogen Cycle
More on Nitrogen Cycle
25.2: The Flow of Energy(
Practice Test
)
Concept of Trophic Levels
Concept of Productivity
Energy Relations Between Different Trophic Levels
Ecological Pyramids
Ecological Pyramids Biomass
Ecological Pyramids Number
25.3: Ecological Succession(
Practice Test
)
Succession
Kinds of Succession
Secondary Succession
Stages of Succession
Xerosere
More on Xerosere
25.4: Human Impact on Enviroment(
Practice Test
)
Nuclear Power
Carbon Dioxide and Global warming
Acid Rain
Mechanism of Acid Rain
Effect of Acid Rain
Ozone Depletion
Ozone Depletion due to Oxides of Nitrogen and Sulphur
Role of Chlorofluorocarbons in Destroying Ozone
Effect of Ozone Depletion
25.6: Environmental Resources and Depletion(
Practice Test
)
Renewable and Non-Renewable Resources
Renewable Resources (Land and Wildlife)
Conventional Energy Resources
Non - Conventional Energy Resources
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