Why are there always more members on the lower trophic levels than the higher trophic levels? The members of the lower trophic levels are always small in size so there can be more of them.
The members of the lower trophic levels pass on all of their energy to the next trophic level.
As energy moves from one trophic level to the next, less and less energy is available for the next level limiting the number on the next level.
As energy moves from one trophic level to the next, more and more energy is available for the next level limiting the number on the next level.

Cladistics is a way of classifying organisms by examining the characteristics of their ancestors and descendants and depicting the relationships in a cladogram. which of the following best describes a challenge in classifying organisms this way? a. there are millions of species on earth, and a cladogram is not a practical means for classifying all of them. b. it is impossible to tell which organisms are most closely related to each other using a cladogram. c. cladograms are detail-oriented and do not provide a useful understanding of evolutionary relationships. d. there is a limited number of ways to organize the information, so most cladograms end up looking very similar.