WHY is the Earth's axis tilted at 23.5 degrees to the ecliptic? We don't know for sure. All rotational motion is "conserved" when masses converge; for example, the rotation of everything in the solar...
23.5 degrees
Seasons. Without the inclination of the earth's axis there could not be seasons e.g. summer, winter, autumn and spring.
false
without the tilted axis the whole planet would be impossible to live on since this angle is a state of equilibrium