If i deactivate my facebook..can i reactivate it later?
Yes you can. And yes, all your friends and photos will still be in your profile. :)
When you deactivate your facebook & reactivate it can people see your comments/likes on their stuff from befor?
Yes It's the same account so all the stuff will be there. I would recommend changing you privacy setting if you don't want things seen.
How do you reactivate your old iPhone 3gs if you upgrade from the iPhone 3gs to the iPhone 4 and then lose or get it stolen how would you reactivate your old iPhone so you can use it again?
Yes, the IPhone 4 is now available. It became available in February.
Why does your period keep getting later and later?
each person is different, and each person has a different lunar phase
Can a rhesus negative woman with a premature birth that died and a still birth later having had no treatment in any of the two situations have babies later in life?
yes. be sure to talk to your doctor, and make appointments so your doctor can help you make sure no accidents acure.