Final answer:
Honey bees are crucial pollinators in the ecosystem, benefiting both themselves and flowering plants. Pesticides that harm bees can disrupt the ecological balance and reduce food yield.
Step-by-step explanation:
Honey bees are crucial for the ecosystem, especially in the Fresno area. Bees have a mutualistic relationship with flowering plants - they benefit from obtaining food from flowers, while plants benefit from pollination by bees. Bees, including honey bees, are the main pollinators of many food crops, including fruits, vegetables, and nuts. Pesticides that harm bees can disrupt this ecological balance, leading to reduced food yield and affecting humans and other animals in the food chain.