A request is something someone asks you to do. It is reasonable if there are good reasons for doing as you are asked or at least no good reasons not to do so. Of course, this is extremely subjective.
reasonable judgment
A resource that can be replaced naturally within a reasonable time period.
I don't know what "elliptical planet" is supposed to mean, but by any reasonable definition I can think of, no, all planets are "elliptical planets".
What reasonable estimate for the size of a cell's nucleus?
Change Request (CR)
reasonable judgment
30
It means reasonable.
Reasonable solution or Reasonable answer
If the request is reasonable, and doesn't interfere with your tasks and responsibilities, help the coworker. If it does interfere with your tasks, ask a supervisor what to do.
That seems to be a reasonable definition.
It is a request to do something.
15 days
A hypothesis is a reasonable answer based on what you know and what you observe.
Not by any reasonable definition of the word "orbit", no.
a petition
The definition of imminent is when something is almost certain to occur in a reasonable time period. It is imminent that you will learn this definition!