Karate posses no more risk of injury or the stunting of growth then any other physical activity. I would suspect that this is a rumor spread by parents that don't want their kids to take karate!
Not specifically. Any exercise improves overall fitness, which in a growing youth can be beneficial, but you wouldn't be able to credit karate with any additional growth.
Learning karate, or participating in any other sport, will not stunt someone's growth. Like all sports and physical activity of all types, there are risks associated with them.
No, there is not any medication to cause facial hair growth.
No more than any other sport or physical activity affects growth. Improved flexibility, health and strength are good things for physical growth, not bad.
1) an insect bite or sting 2) a bite or scratch from a cat or other dog 3) dental problems 4) a growth (cyst or tumour) Any problems with any animal should be checked out by a vet
A toddler isn't really capable of learning karate. It requires knowledge and understanding, as well as good balance and muscle. Moderate exercise is good at any age and is not likely to affect their growth.
The rain will cause problems with stopping and connecting with the pavement.
Yes, it will not cause any problems.