Interphase. Reason: interphase is the first stage of mitosis but since mitosis is the division of the nucleus prophase is actually the first stage.
The tilt of the earth changing would affect the distance to the sun. This, the radiation from the sun, and resulting temperatures, would change as well.
The Kingdom Protista has a bunch of organisms thrown into the category because scientists have yet to sort them out properly. In the future these classifications might become more specific.
