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6. usually no more than...trophic levels

  • 1-2
  • 4-5
  • 2-3
  • 5-6

7. the other bars show the trophic level in order of...

  • ...energy
  • ...mass
  • ...biomass
  • ...size

8. pyramids of biomass will not go on forever because...

  • there is not enough biomass in the top level to provide energy needed for another level
  • there is not enough size energy in the top level to provide energy needed for another leve
  • there is not enough energy in the top level to provide biomass needed for another leve
  • there is not enough mass in the top level to provide energy needed for another leve

9. What is it measured in?

  • m/g3
  • g/m2
  • g/m3
  • m/g2

10. producer is which bar?

  • second
  • bottom
  • third
  • top