ecosystem

• All the interacting organisms in an area together with the non living physical surroundings form an ---------

  ecosystem
• ecosystem


  All the interacting organisms in an area together with the non living physical surroundings form an ecosystem
• non living components


  abiotic components
• living components

  biotic components
• examples of biotic components


  producer,consumer,decomposer.
• what is water needed for? (abiotic component)

  respiration, photosynthesis, digestion
• what is light needed for? (abiotic component)

  photosynthesis
• what is temperature needed for? (abiotic component)

  Determine Plants; animal characteristics
• what is air needed for? (abiotic)

  respiration,photosynthesis
• what is soil needed for? (abiotic)

  plant types
• define producers

  producers are organisms that make their own food using photosynthesis
• eg of producers?

  plants, green algae
• define consumers

  consumers are organisms that eat other organisms for food
• define decomposers

  decomposers are organisms that break down the remains of other organisms.
• why are decomposers vital?

  decomposers are vital to ecosystems because they return important nutrients to the environment
• define biosphere

  life supporting portions of Earth composed of air, land, fresh water, and salt water.
• define food chain

  The food chain is a linear sequence of organisms depicting the flow of nutrients and energy from one organism to another.
• define food web

  Interconnected network of food chains within an ecosystem
• define trophic level

  Various links or steps representing organisms in a food chain at which the transfer of food and energy takes place are called trophic levels
• first trophic level consists of?

  producers
• second trophic level consists of?

  primary consumer
• third trophic level consists of?

  secondary consumer
• define symbiosis

  Two different organisms live together and benefit each other.
• define parasitism


  Organisms (parasite) obtain organic compounds from another living organism of a different species (host)
• define predator


  A predator is an animal that feeds on other living organisms .
• define prey


  The prey is the animal killed by the predator for its food.
• define biomass


  Biomass means the mass of living material at a stage in a food chain.