The my friend told me she started when she was only 7 years old.
yes
You can leave responsible children alone for short periods of time, but not overnight. Children at the age of 12 can be left at home for short periods of time.
No. If you get periods, you can get pregnant.
if women don't have periods, they can't have children...
they go on their periods which makes then able to have children.
Some children do but it is not likely that it will happen
With parental permission, but should not be for extended periods.
most likely not.
French children have 6 periods in high school
if you want to risk have you arnothompadeia screwed up and ruin you ability to have children
I'm not sure why you specify children's period - children generally do not menstruate, it occurs from puberty into adulthood. Menstruation at any age can vary on the individual but typically menstruation will last 5-7 days. Younger people may experience longer periods or shorter periods due to hormonal imbalance during puberty.
Children begin to use logic in their thinking during the Concrete Operational Stage according to Piaget's model.