The correct options would be B and E.
Variation in population size
The population size of each organism in different zones may not vary much due to the following:
- Organisms in each zone have characteristics that make them be well-adapted to the zone. These include structures that help them attach to the rock, structures that help them breathe when exposed to the air, and so on.
More on adaptations of organisms can be found here: https://brainly.com/question/1686177
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