Relationships of organisms with one another and with the environment

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Chapter 15: Relationships of organisms with one another and with the environment (64 videos)   (Practice Test)
15.1: Energy flow  (Practice Test)
  1. Processes in Ecosystem and Interaction Between Biotic Components
  2. Biotic Components
  3. Abiotic Components
  4. Abiotic Components (Temperature and Water)
  5. Abiotic Components (Fire, Atmosphere and Wind)
  6. Components of Ecosystem
  7. Carnivores, Herbivores, Omnivores
  8. More on Hetrotrophic Animal Nutrition, Carnivores, Herbivores, Omniv
15.2: Food chains and food webs  (Practice Test)
  1. Food Chain
  2. Food Web
  3. Energy Flow in Food chain
  4. Pyramids of Energy
  5. Trophic Levels
  6. Efficiency of Energy Flow and its Significance
  7. Ecological Pyramids
  8. Ecological Pyramids Biomass
  9. Ecological Pyramids Number
15.3: Carbon cycle  (Practice Test)
  1. Biogeochemical Cycles, Carbon Cycle
15.4: Nitrogen cycle  (Practice Test)
  1. The Nitrogen Cycle
  2. More on Nitrogen Cycle
  3. Nitrogen Depletion & Its Remedies
  4. Some Insects being the Vectors of Diseases
15.5: Parasitism  (Practice Test)
  1. Study of Malaria
  2. More Study of Malaria
  3. Apicomplexans
15.6: Effects of humans on the ecosystem  (Practice Test)
  1. Balance in Nature(Ecosystem)
  2. Tropical Rain Forest
  3. Temperate Deciduous Forests
  4. More on Temperate Deciduous Forests
  5. Coniferous Alpine and Boreal Forests
  6. Taiga
  7. The Grass Land Ecosystem
  8. More on Grass Land Ecosystem
  9. Desert Ecosystem
  10. Desert Ecosystem (Adaptations in plants)
  11. Desert Ecosystem (Adaptations in animals)
  12. Tundra Ecosystem
  13. Alpine Tundra
  14. Components of Pond Ecosystem
  15. Biotic components of Pond Ecosystem
  16. Life in Ocean
  17. Oceanic zone
15.7: Pollution  (Practice Test)
  1. Deforestation, Soil Erosion
  2. Impact of Human Beings on Biodeversity,Causes and Effects of Defores
  3. Land Pollution
  4. Water Pollution
  5. Effects of Water Pollution
  6. Nutrient and Thermal Water Pollution
  7. Pollutants
  8. More on Pollutants
  9. Sources of Particulate Pollutants
  10. Sources of Air Pollutants
  11. Ozone Layer Deplition
  12. Carbon Dioxide and Global warming
  13. Acid Rain
  14. Control of Pollution
  15. How to Control Pollution?
15.8: Conservation  (Practice Test)
  1. Protection and Conservation of Environment
  2. Issues and Importance of Conservation of Biodiversity
  3. Consevation of Biodiversity
  4. Consevation of Wildlife
  5. Consevation of Biodiversity,Endangered Species in Pakistan
  6. Impact of Human Beings on Biodeversity,Causes and Effects of Defores
  7. Some Issues of Conservation in Pakistan
  8. Reasons for the Conservation of Biodiversity
  9. Environmental Hazards Related to Fertilizers Use
  10. 3 R, Reduce, Reuse and Recycle