* Day and Night are caused by the
Revolution of the Earth
Tilt of the Earth on its axis
rotation of the Earth
gravitational pull of the Moon

Is those questions??!

I think it’s rotation of the earth but I could be wrong

Eukaryotic cells are theorized to have evolved from prokaryotes called the endosymbiotic theory. this explains that the most primitive eukaryotic cell engulfed a prokaryotic cell (by the process of phagocytosis) that is capable of cellular respiration and another prokaryotic cell that is capable of photosynthesis. these prokaryotic cells eventually became organelles and these organelles are the mitochondria and the chloroplast