management questions. please help

What are the three main types of trophic pyramids studied in ecology?

12. What do numeric pyramids represent?

13. In a numeric pyramid, what trophic level is the base? What about the top level?

14. In a numeric pyramid, is it possible for the base to be smaller than the other levels?

15. In the short term, what will happen to the levels above and below a population of secondary consumers of a numeric pyramid if a large number of individuals from this population dies?

16. What do biomass pyramids represent?

17. What is dry mass?

18. What do energy pyramids represent?

19. Into which type of energy is the light used in photosynthesis transformed?

20. Can the amount of available energy on a given trophic level be larger than the available energy on lower trophic levels? What does that condition mean for the shape of energy pyramids?