Review the data in the following table.

a. Are the four gull populations all increasing in size at the same rate? Explain.

b. Which rates are the most similar?

c. While doing further research on gull populations, you discover that in 1985 there were 15,000 pairs of laughing gulls living in the vicinity of John F. Kennedy International Airport in New York City. How does this knowledge change your answers to 1a and 1b?

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Gull Species Initial Observation Final Observation Locations Mating Pairs/Year Mating Pairs/Year Kennedy Airport, New York, United 7,600 pairs/1990 Laughing Gull 15 pairs/1970 States Leslie Spit, 20 pairs/1973 Ring-Billed Gull 80,000 pairs/1982 Toronto, Canada Five Islands, Wollongong, New South Wales, 3 pairs (est.V1949 Silver Gull 51,500 pairs/1978 Australia Mud Islands, Port Phillips Bay, Victoria, Australia 70,000 pairs/1988 Silver Gull 5 pairs/1959