9.1

• Ecosystem - All the biotic componets and the abiotic components living in the same area
• Population - All organisims of one species living in the same area at the same time.
• Community - A group of different populations of different species living in the same area at the same time
• Habitat - A Place in the ecosystem where an organism lives.
• Niche - The role of a certain organisim in a ecosystem
• Food Chain - A diagram showing a relationship between a single producer and a primary, secondary and tetriary consumer.
• Food Web - A diagram showing the relationship between all the producers , primary,secondary and tetriary consumers in a ecosystem
• Trophic Level - A Feeding level in a food chain or food web
• Pyramid of Numbers - A diagram that illustrates the number of organisims at different trophic levels in a ecosystem
• Energy Is lost during:

  • Transfer as heat from to enviorment
  • Respiration
  • Growth
  • During excreation
  • Lost by incomplete digestion by higher trophic level.
• BIOTIC FACTORS

  • PRODUCERS
  • PRIMARY CONSUMERS
  • SECONDARY CONSUMERS
  • TETRIARY CONSUMERS
  • DECOMPOSERS
• Producers - organisms within an ecosystem that can

  carry out photosynthesis.
• Primary Consumers - organisms within an ecosystem

  that derive their food from producers.
• Secondary Consumers - organisms within an ecosystem

  that derive their food from primary consumers.
• Tetriary Consumers - organisms within an ecosystem

  that derive their food from secondary consumers.
• Decomposers - organisms within an ecosystem that

  derive their food from the bodies of dead organisms.
• ABIOTIC FACTORS

  • Water
  • Humididity
  • pH
  • Oxygen
  • Salinity
  • Light
• Process of photosynthesis

  Plant traps light energy with the help of a special green pigment called chlorophill. Hydrogen is added to CO2 to make glucose. Glucose is used by plants in respiration to release energy
• Photosynthesis equasion

  Carbon dioxide + water → oxygen + glucose
• Respiration

  the process by which living things release energy from food to carry out the process of life, such as movement.
• Respiratione equasion

  Glucose + oxygen → energy + water + carbon dioxide
• Biotic Interactions

  • Competition
  • Predetation
  • Pollination