Final answer:
Blow flies are attracted to dead bodies and arrive within hours of an animal's death. They have a complex life cycle consisting of four stages.
Step-by-step explanation:
Blow flies are attracted to dead bodies because they lay their eggs on them and their maggots feed on the decaying flesh. Blow flies typically arrive within hours of the death of an animal. They have a complex life cycle that consists of egg, larva, pupa, and adult stages.