Food Chains

• Food chains show whats eaten by what in an ecosystem

  • always start with a producer (make their own food using the sun)
  • producers are usually green plants or algae they make glucose
  • some of the glucose is used to make other biological molecules
  • biological molecules are the plants biomass - mass of living material
  • biomass thought of an energy stored plant
  • energy is transferred through living organisms in an ecosystem when organisms eat other organisms
  • produces are eaten by primary consumers - eaten by secondary consumers - eaten by tertiary consumers
• Population of Prey and Predators go in cycles

  • the population of any species is usually limited by the amount of food avaliable
  • if the population of the prey increases then so will the predators
  • if the population of predators increases the prey will decrease