Answer Happy

Use the following passage to answer the next 5 questions. You are studying the intertidal zone of a previously unstudied island. You find three species of barnacles on the rocks. Species A is most abundant in the upper intertidal zone, Species B in the middle, and Species C in the lower, as shown below. D Species A dominates Species B dominates Species C dominates Upper intertidal zone Middle intertidal zone Lower intertidal zone
Q10. You now turn your attention again to the lower intertidal zone. Individuals of all three species can survive there in the absence of the others, and all three species settle there at the same rate. If a predator were present that fed only on Species C, you would expect to see fewer individuals of Species C. What else would you reasonably expect to observe, based on the data you've collected? You would expect a sparsely populated lower intertidal zone, because individuals of Species A and B would still be rare. Species B would dominate the region because it is better adapted to the lower intertidal zone than is Species A Species A would dominate the region because it is the best adapted of all three species. You would an expect an increase in the number of individuals of Species A, Species B, or both, but you can't predict which would dominate.