Would the shrew population be affected b a decrease in the insect population?

Yes, a decrease in the insect population would likely affect the shrew population, as shrews primarily rely on insects as a key food source. With fewer insects available, shrews may struggle to find enough food, leading to decreased survival and reproduction rates. Over time, this could result in a decline in the shrew population. Additionally, the overall ecosystem balance could be disrupted, further impacting shrew habitats and food availability.