Answer:
Because the earth's axis is tilted. It is all about the tilt of the Earth axis.
Explanation:
It would be impossible to feel them move because they are moving to slow for us to realize it. Well, that is what I think.
Sperm cells inside the pollen grain travel down the pollen tube and into the ovary which contains the ovules. Fertilization occurs when one of the sperm cells fuses with the egg inside of an ovule
