Why won’t my Speed odometer work and my gas gauge

What is your question?

What could be causing my speedometer not to work and my gas gauge to be going up and down when I pick up speed can they both be from the same problem

What makes this problem better or worse?

Speedometer does not work and gas gauge drops I’m driving then goes back up

How long has your 2007 Dodge Durango had this problem?

Speedometer does not work and gas gauge drops I’m driving then goes back up