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In what situation might a continuous-time exponential growth model be a GOOD description of how population size grows over time? Group of answer choicesA population of animals infested by transmissible deadly parasitesA population of birds with several predators.A bacterial culture growing in a laboratory with an unlimited amount of resources.A population of rats living on a small island.

Question

In what situation might a continuous-time exponential growth model be a GOOD description of how population size grows over time? Group of answer choicesA population of animals infested by transmissible deadly parasitesA population of birds with several predators.A bacterial culture growing in a laboratory with an unlimited amount of resources.A population of rats living on a small island.

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Solution

A continuous-time exponential growth model would be a good description of how population size grows over time in the situation of "A bacterial culture growing in a laboratory with an unlimited amount of resources."

Here's why:

  1. Exponential growth models are used when the growth rate of a population is proportional to the population's size. In other words, as the population gets larger, it grows faster.

  2. In the case of a bacterial culture growing in a laboratory with unlimited resources, the bacteria have all they need to reproduce and grow. There are no limiting factors such as lack of food or space, or presence of predators or diseases, which could slow down or stop the growth.

  3. Therefore, the population of bacteria can grow rapidly and continuously, doubling in size at regular intervals. This is a characteristic of exponential growth.

  4. The other scenarios involve factors (predators, parasites, limited space) that would likely prevent continuous exponential growth.

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