A few individuals of a bird species fly to a small city that previously had no individuals of this species. The immigrant birds find that the city has adequate food and no predators. On average, each bird has four offspring per year and lives for two years. How will the population of birds change over the first few years?
a. The population will grow steadily, gaining a constant number of birds each year.
b. The population will grow more and more rapidly with each passing year.
c. The population will grow steadily for a few years and then shrink steadily back to zero.
d. The population's growth in the first few years will depend on the size of the city.
b. The population will grow more and more rapidly with each passing year.
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