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Chapter 31: Ecosystems and Biomes

Practice Test
      
  1.What is a chemical that includes the element nitrogen?  
  a.   carbon dioxide  
  b.   nitrate  
  c.   chlorophyll  
  d.   phosphate  
  Hint    
      
  2.What is water in the air that falls to Earth?  
  a.   precipitation  
  b.   carbon dioxide  
  c.   oxygen  
  d.   nitrogen  
  Hint    
      
  3.What is the process in which water passes through plants and out of the stomata in their leaves?  
  a.   runoff  
  b.   transpiration  
  c.   infiltration  
  d.   precipitation  
  Hint    
      
  4.What is the recycling of nitrogen in an ecosystem called?  
  a.   the life cycle  
  b.   the nitrogen cycle  
  c.   the water cycle  
  d.   the oxygen-carbon dioxide cycle  
  Hint    
      
  5.What is a water ecosystem in which the water does not have a high salt concentration?  
  a.   salt marsh  
  b.   freshwater ecosystem  
  c.   tidal pool  
  d.   saltwater ecosystem  
  Hint    
      
  6.What are the changes that take place in a community as it gets older?  
  a.   succession  
  b.   molting  
  c.   aging  
  d.   metamorphosis  
  Hint    
      
  7.Which biome has the lowest temperature?  
  a.   taiga  
  b.   tundra  
  c.   grassland  
  d.   temperate forest  
  Hint    
      
  8.Which biome contains palm trees and orchids?  
  a.   tropical rain forest  
  b.   grassland  
  c.   taiga  
  d.   desert  
  Hint    
      
  9.Which biome contains cacti and small bushes?  
  a.   taiga  
  b.   desert  
  c.   tundra  
  d.   grassland  
  Hint    
      
  10.What is a community interacting within the environment?  
  a.   biome  
  b.   niche  
  c.   mutualism  
  d.   ecosystem  
  Hint    

 
   
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