4.1

• Ecology


  The study of organisms, the environment and how the organisms interact with each other and their environment
• Key areas covered in ecology


  • Biodiversity
  • Ecosystem
• Biodiversity


  The number and variety of plants, animals, and other organisms that exist in an ecosystem
• Biodiversity is a measure of the variety of organisms present in different ecosystems
• Types of biodiversity


  • Genetic diversity
  • Ecological diversity
  • Species diversity
• Genetic diversity


  The variety of genetic information contained in all plants, animals, and microorganisms
• Ecological diversity


  The diversity of different types of communities formed by living things, the relationship between them and ecological processes
• Species diversity


  The variety of living organisms on earth
• Ecosystem


  An area containing an interaction of living and non-living factors in an area or region
• Ecosystems


  • Grassland
  • Freshwater
  • Marine
  • Desert
  • Tropical Rainforest
• Biotic


  Any living components that have a direct or indirect influence on other organisms in an environment
• Biotic components


  • Living things
  • Once living things
  • Parts of living things
  • Carry out of all characteristics of life
• Abiotic


  All chemical and physical elements or non-living components
• Abiotic components


  • Non-living things
  • Have never lived
  • Not parts of living things
  • Do not carry out all characteristics of life