Answer:
The statement "Biodiversity in the region has increased due to the dry conditions" does not provide an accurate explanation for the increase in the population of insect species adapted to dry conditions.
It is more likely that the increase in the population of these insects is due to natural selection, where individuals with traits that are advantageous in dry conditions are more likely to survive and reproduce, passing on their beneficial traits to their offspring. Over time, this can lead to a greater proportion of the population having these adaptive traits, resulting in an overall increase in the population of insects adapted to dry conditions.