Pest insect population dynamics is all about how the number of pest insects (like bugs, moths, and flies) changes over time. One important factor that affects pest insect population dynamics is the number of things (like food and shelter) that are available for the insects. For example, if there is a lot of food and shelter, more insects may be able to survive and the population of insects will grow bigger. But if there are not enough things available (especially food and shelter), the insect population size will shrink over time. Other factors like the weather (hot or cold), predators (birds, lizards or spiders), and diseases (like viruses or bacteria) can also affect pest insect population dynamics. Understanding pest insect population dynamics is important because it can help us to figure out the best ways to control pest insects and prevent them from becoming a problem.