Final answer:
The iguana population experienced slowed growth over time due to limited food supplies. After exponential growth, the population entered a logistic phase, aligning with the environment's carrying capacity.
Step-by-step explanation:
As generations went by, the iguana population's growth rate slowed down because food supplies became more limited. This shift in population dynamics occurs typically after a period of exponential growth, where the number of individuals in the population increases rapidly when resources are plentiful. However, as the available resources start to diminish with the increasing population size, the growth rate slows, entering a logistic phase. This eventually leads to a stable population size that is aligned with the carrying capacity of the environment, representing the maximum number of individuals the local resources can support.
Initially, the population grew exponentially, but as resources became scarcer, the growth rate decreased. This is known as logistic growth, where the population growth rate slows down and levels off to reach the carrying capacity of the environment.