1Invertebrates& FishInvertebrates& FishTable 15-1, p. 409What is your trophic level?•Trophic levels begin with phytoplankton, a primary producer capable of transforming inorganic carbon into carbohydrate. •Zooplankton is the second level- they eat phytoplankton and are a source of energy for crustaceans at the third level. •The fourth level is fish that eat crustaceans and the fifth is seals and other animals that eat fish. •The more trophic levels present, the less energy is conserved at higher trophic levels.primary producersprimary consumerssecondaryconsumerstertiaryconsumerMarine plants = base if of the food chainFig. 15-1, p. 408•The “OXYGEN REVOLUTION”•After the emergence of photosynthetic organisms, oxygen began to accumulate in the atmosphere.•Early Life on Earth CREATED conditions for Present Life Thank you !
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