Chapter 26 Key Terms

• p. 570: ecosystem, biogeochemical cycle, water cycle
  
• p. 571: surface water, groundwater, aquifers, water table, transpiration
  
• p. 572: carbon cycle, cellulose, peat, nitrogen cycle, ferredoxin, nitrogen reductase, nitrogenase, nitrogen fixation
  
• p. 573: legumes, ammonification, denitrification, oxygen cycle
  
• p. 574: phosphorus cycle, phosphates, guano, superphosphate, apatite
  
• p. 576: autotrophs, heterotrophs, primary production (primary productivity), gross primary productivity, net primary productivity, biomass
  
• p. 577: primary producers, primary consumers, herbivores, secondary consumers, carnivores, decomposers, detritivores, trophic levels, food chain, food web
  
• p. 578: meiofauna
  
• p. 579: pyramids of biomass, pyramids of energy, pyramids of number, planktonic ecosystem, succession, secondary succession, primary succession, xerarch succession, hydrarch succession
  
• p. 580: oligotrophic, eutrophic, climax vegetation, climax community