Answer:
My first is in fish but no in snail. My second is in rabbit but no in tail. My third is in up but not in down. My fourth is in tiara but not in crown. My fifth is in tree you plainly see. My whole a food for you and me.
What can be swallowed, but can swallow you?
The root tops the trunk on this backward thing, that grows in the winter and dies in the spring.
What is often returned but is never borrowed?
Thousands of these come together to make a digital image. What is it?
What covers its face with its hands, speaks no language, yet most known what it's saying?