what is the purpose of flies ?

Question: what is the purpose of flies ?
- Keywords:
  flies,
  purpose
Asked by 762furk49 to Chris, Kathryn, Sarah on 17 Nov 2017.
- Chris Werner answered on 17 Nov 2017:
  
  Its mostly to pollinate plants but also to break down and consume garbage and other animals excretions! Also food for spiders and some birds. They are an essential albeit very annoying part of the food web!