Why do stars seem to move in the sky

Stars move in the sky because the earth is spinning and orbiting on its axis. Because we are moving in the sky the stars move as well because the earth is spinning. That is also why the clouds move in the sky.

(I'm sorry if my answer is bad :<)

the farther away the object is from the central star (the sun) it's gravitainal pull on the object is weaker when it is farther

explanation:

for a different answer set the answer would be because the oxygen in the water had depleted (apex)