Earth
That's what causes the seasons.
Tilted as compared to what? The only comparison that actually makes any difference is that the Earth's axis of rotation is "tilted" at about 23.5 degrees compared to the ecliptic, which is the plane of the Earth's orbit around the Sun. This "axial tilt" causes the seasons.
axis on what? the earth? if yes its tilted
The earth is always tilted on its axis. It is about 23.5o
The Earth's axis is tilted by about 23.5 degrees.
Plutois tilted 122.5 degrees on its axis.
Because Earths axis is tilted.
The Earth has seasons because it polar axis is tilted relative to its orbit.
The seasons are caused by the tilted axis and orbit. The axis is tilted with respect to its orbital plane.
it is tilted on its axis
The Earth spins about its axis. That defines the Earth's axis. It is the axis of spin that is tilted. If the Earth were not spinning it would not have an axis.