Question

The number of trophic levels that can be maintained in an ecosystem is limited by:
a. a gain in population size
b. the loss of potential energy
c. the number of individuals in the ecosystem





i have chosen a but it is for a grade and i would love some help?? :)
Ms. Sue
Bekah, Rachel, Skipper -- why have you changed your name for each post? Are you having an identity crisis?

Please keep the same name for your posts in this forum.