4.1 - 4.9

• Habitat - The Place where an Organism Lives
• Population - All the Organisms of one species in a habitat
• Community - All the different species in a habitat
• Ecosystem - All the Organisms and Abiotic factors in an area
• Abiotic - Non-living conditions/factors
• Biotic - Living Organisms
• Biodiversity - The Variety of Different species of Organisms within Ecosystem
• Abiotic Factors affecting Communities:

  1. Environmental Conditions
  2. Toxic Chemicals
• Biotic Factors affecting Communities:

  1. Availability of food
  2. Number of Predators
  3. Competition