Rabbits like this one change colors when the winter comes. in the spring, this white rabbit will turn back to brown. what would be a testable question to ask about the rabbit's color change from season to season?

Question:

To what the colour change and the colours it changes to related?

It's coulour changing is related to camouflage. In winter, it was probably a lighter colour making it best for hiding on the snow, in spring, a dark colour like brown is best.

Hope it helped!