What causes the “apparent” yearly motions of the sky?

Answer 1

Put simply, the annual orbit of the Earth around the Sun.

We find ourselves with pretty much the same view of space at yearly intervals. The stars are so far away as to appear unchanged year on year, although precession means that they will move slowly.

The planets are very much closer so they appear to "wander" across the sky rather than obeying the yearly rule.

Answer 2

The earth orbits the sun once per year. The sun or daylight side of the earth is always pointing inward toward the sun. The night side of the earth is therefore always pointing outward - away from the sun. As the earth swings around the sun, this outward side is oriented in a full 360 degree sweep as the year goes by. In the summer, the outer or night side of the earth is pointed roughly toward the center of our galaxy, which we see as the constellation Sagittarius scattered across the face of the Milky Way. In the winter, we are oriented to look outward at night away from the galactic center, so we see Orion within our arm of the galaxy spiral and Perseus in the next arm outward. In spring, we see out of the galactic plane toward Leo and Virgo, in fall we see out of the galactic plane in the other direction toward Pegasus.