That's why Roy mentioned his tree being? sustainable, which means they can continue to be grown and cut down over a longer period, so it's less harmful to the environment.
The seed doesn't need to have any light at this point because the tiny seed has enough energy stored inside to help it grow to the level of the soil where it gets the sunlight it needs to continue.
The FSH drives that one lucky follicle to keep growing, by triggering the follicle itself to secrete its own estrogen hormones, which locally signal the follicle to mature even more.