a) Which sample site (A to D) had the highest number of crabs?
b) In which sample site was the crabs only rarely found?
c) Name the agent of pollution that affected the crabs.
d) In which sample site was the most crabs affected compared to the population
size?
e) Explain your answer to the question above
f) List TWO strategies that could reduce the effects of oil pollution at sea.292 9.9. Summary