pyramids of energy

• What does a pyramid of energy show?


  the relative amount of energy available at each trophic level
• on which layer of a pyramid of energy will producers be found


  on the bottom layer
• what does a pyramid of biomass look like

  
• what does a pyramid of numbers look like

  
• what does a pyramids of numbers show


  the raw numbers of organisms at each trophic level
• what does a pyramid of biomass show


  the amount of organic matter at each trophic level per unit area
• what does a pyramid a energy show


  this is the quantity of energy transferred from one trophic level to another per unit area
• what is an advantage of a pyramid of numbers/biomass


  they are easy to construct
• What are the disadvantages of a pyramid of numbers/biomass?


  they dont consider the size of the organisms , the quantity's of organisms may be huge , the pyramid may be inverted
• what are the features of pyramid of biomass


  they are difficult to measure accurately , they dont indicate the flow of energy through the ecosystem ,may be inverted, not all biomass is available as energy to pass onto the next trophic level
• What is the most accurate way of representing feeding relationships

  pyramids of energy
• what are the features of a pyramid of energy


  as energy is lost through the food chain the area of the bars decrease, they are never inverted and are very easy to compare efficiency of energy transfer