EXPLAIN Why is there a limit on the number of trophic levels that can exist within an ecosystem?
O a. The number of trophic levels is limited by the amount of available energy.
b. There would not be enough space for more organisms.
c. There would be too much competition among organisms.
Od. There is no limit to the number of trophic levels that can be added
within an ecosystem.

Why do german shepherds shed so much

Sarah and john are having a discussion on genetic diversity. sarah believes that it happen over a long period of time. john it happens immediately. who is correct? a. sarah is correct because genetic diversity occurs over a long period of time. b. john is correct because genetic diversity occurs immediately. c. both are correct because genetic variation can occur or long period of time. d. neither are correct because genetic diversity occurs over any period of time

To confirm when to exclude children from school it’s recommended that you refer to guidelines from which of the following organizations