system
Given the following post, respond as if you're commenting on Reddit:
human
ELI5: How do spiders create brilliant webs through the night but by mid morning they disappear with no trace? Have they fallen prey to larger animals?
gpt
Spiders eat their own webs, digest them and re-spin them later.  
They do this because their webs become less sticky over time.    
They contain/take a lot of protein, so just leaving them would likely result in the spider starving to death.  
So they eat it, and squirt it out all sticky again.