Multiple choice general knowledge 35 meters of hair fiber is produced every day on the average adult scalp. True False Reveal answer Fill a bubble to check yourself B Correct answer Explanation 35 meters per day is implausible. With ~100,000 hair follicles on the scalp, that would mean each hair grows 0.35mm/day, far exceeding actual rates (~0.3-0.4mm PER DAY total growth is normal).