Summary:

• Different definitions of biodiversity (variation of life at all levels of biological organization).
• The earth's summit & the issue of biodiversity.
• About 1.4 million species identified till now, unfortunately thousands of species are vanishing each year because of unfriendly attitude of human toward the environment.
• Three levels of biodiversity are there:
  1) Genetic diversity,
  2) Species diversity &
  3) Ecosystem diversity.
• Definitions & some examples of: Competition, Parasitism, Mutualism, commensalisms, Symbiosis and pathogen groups.
• The importance of biochemistry & components of biodiversity.
• Values related to biodiversity (Ecological, Economic, Genetic, etc).
• Species are now vanishing faster than any other time in the earth's history-Extinction.
• Biodiversity is threatened by population growth, pollution, over exploitation, climate change, etc.
• Agro biodiversity & various ecosystems: forest, range land, wild life, insect, fresh water, marine & coastal habitats and microorganisms.  
• International conventions for biodiversity conservation.
• Biodiversity conservation strategies & sustainability.
• DNA, heredity and genetic engineering.
• Biosafety & biodiversity (transgene, case studies...).
• Biosafety & Genetically Modified Foods GMF (people need more food as population rises to 8.3 millions by the year 2025).
• Transgene and human genome.
• Allergy & GMF safety.