"From 10AM to 4PM are the most dangerous hours for exposure to the sun."
The first two don't make any sense. As for SPF, the FDA minimum is 15 but the recommended minimum is 30. 10AM-4PM are the peak sunlight hours, generally (unless you live in Antarctica of course).
1. I think that the most popular conversation is about celebrities and relationships.
2. Parents have work and they have to take care of they're kids and they don't really have time.
3. I guess would be like whenever there is an event (not a fight) and when you are with friends. Also, if you want to celebrate an achievement. Basically on the weekend I guess.
4. Some people get cyberbullied and others get hacked.