The Nitrogen Cycle

Vocabulary Decomposers- organisms that break down dead or decaying organisms, and in doing so they carry out the natural process of decomposition. They use organic substrates to get their energy, carbon and nutrients for growth and development. Decomposers use _________________ to breakdown _________________ ____________. Sentence: Decomposers use decomposition to breakdown organic matter.

You have 30 seconds to share your responses Think, Pair, Share Partner A: Explain the definition of decomposers to Partner B. Partner B: Explain the sentence and picture of decomposers to Partner A. You have 30 seconds to share your responses

Vocabulary Nitrogen Fixation- a process in which nitrogen (N2) in the atmosphere is converted into ammonium (NH4+) or nitrogen dioxide (NO. 2), for example. ____________________ __________________ is the process of __________ being converted to _______________

You have 30 seconds to share your responses Think, Pair, Share Partner A: Explain the definition of nitrogen fixation to Partner B. Partner B: Explain the sentence and picture of Nitrogen Fixation to Partner A. You have 30 seconds to share your responses

Vocabulary Denitrification- a microbial facilitated process of nitrate reduction that may ultimately produce nitrogen (N2) through a series of intermediate gaseous nitrogen oxide products. ____________ is converted to ___________ in nitrogen fixation.

You have 30 seconds to share your responses Think, Pair, Share Partner A: Explain the definition of denitrification to Partner B. Partner B: Explain the sentence and picture of denitrification to Partner A. You have 30 seconds to share your responses

Nitrogen Requirements All organisms require ________ to make amino acids that build ________. Many different forms of _________ occur naturally in the __________. Nitrogen ____ (N2) makes up ___% of the ___________. proteins nitrogen biosphere 78 gas atmosphere

Nitrogen locations outside the atmosphere Ammonia ___________ (NH3), and other ions are in animal ________ and in _____ or ________ organic matter. Nitrogen also is in the ______ and other large bodies of ______. Humans add _______ to the _________ when they apply plant ________. wastes dead decaying ocean water nitrogen biosphere fertilizer

Nitrogen Fixation ________ that live in ____ or on plant ____ (legumes) use forms of nitrogen ____ and change it into _________. This process is called _________ ________. Bacteria soil roots gas ammonia nitrogen fixation

Other bacteria converts __________ into ________ and _______. ammonia Other bacteria converts __________ into ________ and _______. _________ use these to make proteins and then _________ eat the producers to use the nitrogen and make their own protein. nitrites nitrates Producers consumers

Denitrification When organisms die, ____________ return _______ to the soil as ammonia. The ________ can be taken up by __________. Bacteria converts the _______ into nitrogen ___ by ____________. Then nitrogen is released into the ___________ again. decomposers nitrogen ammonia producers nitrates gas denitrification atmosphere

Levels of the Nitrogen Cycle