2 Energy Transfer Energy is the ability to do work 3 main paths in which energy flowsProducersConsumersDecomposers
3 Energy FlowProducers -autotrophs are organisms that produce their own energyPhotosynthetic autotrophs create energy from the sun6CO2 + 6H2O + solar energy C6H12O6 +6O2Chemoysynthetic autotrophs create energy from inorganic molecules (chemicals)
4 Energy Flow Consumers – organisms that can not make their own food Types of consumersHerbivores- eat producersCarnivores- eat other consumersOmnivores- eat both producers and consumers
5 Energy FlowDecomposers- organisms that feed on the “garbage” of an ecosystemExamples:fungi, bacteria, some insects, worms, etc.
6 Energy FlowCellular Respiration-process of breaking down food to yield energyCells absorb oxygen and use it to release energy from foodsC6H12O6 +6O CO2 + 6H2O + energy
7 Energy Flow Trophic Levels -feeding steps in a food chain or food web, in which energy is transferredFood Chain-transfer of energy from organism to organismPlant Mouse Snake OwlFood Web-all the possible feeding relationships in an ecosystem
9 Energy Flow The Energy Pyramid Each link in the food chain results in a loss of energyRoughly only 10% of energy available at one trophic level is transferred to the next levelAs you go up the trophic levels the number of organisms decreasesExample: Think of how many chipmunks you see, compare that to the number of hawks.