As far as I know, nothing special happens every 100,000 years. A full precession cycle takes about 26,000 years.
the earths orbit because the earths orbit is the size of earth + the size of the moon
Earths Orbit? Earths Orbit?
Earths orbit around the sun is not unusual.
It relates because after every orbit the seasons change
earths tempertures
Venus
Because the sun, moon and earth are not always in alignment. The moon does not orbit the earth about the earths equator. The earths axis is tilted so the orbit around the sun does not always align with that of the moons orbit around the earth
The same way every other place in the world does. Because of the inclination of rotation about the earths axis and the earths orbit around the sun.
earths tempertures
The earths orbit around the sun is almost circular.
That's a 'geosynchronous' orbit. If it also happens to be over the equator, so that the satellite appears to stay at the same point in the sky, then it's a 'geostationary' orbit.
Orbit