What's the difference between DVD-R and DVD+R disks?

I have been wondering what is the difference between What's and Whats for a while. I always thought that What's that meant "what is that". While whats meant on something your not describing. How about there's and theres.... What's the difference...

I was wondering whats the difference between some volkswagen jettas. I was wondering the difference between the TDI, GTI, Wolfsburg Edition, California Edition, i feel like im missing one more. Whats faster? whats the difference inside? which one cost...

this drive will act like its burning and then when it says complete it will still be a blank disk in the drive. sometimes it will give an error. but in itunes it will act like its burning. even the light on the drive blinks. whats wrong?

Im looking to buy a 06/07 Lexus IS but i cant decide which one to go for, i really don't know much about the difference between the 250/ 350/ IS-F. I need help. Any recommendation?

what is the difference between ATA and SATA hard disks

Whats the basic difference between PS3 40 GB, 80 GB, 160 GB, 250 GB, 320 GB, 500 GB? Play and save more games? Anything else to mention? And If I were to buy a PS3 to play games and do some sort of other stuffs, which Gigabyte Storage Amount would be...

i know the difference when it comes to regular nouns and stuff, but not with verbs. the way i know the best is just "watashi ha (-masu form)". but whats the difference between that and "watashi ha (-te form) imasu". this kinda think...

BQ- Maestro, do you watch or have you ever watch Illara's Sociedad playing in your life time? BQ2- Maestro, whats the difference between a box-to-box and a deep lying playmaker?

i have a wood burner that is used to burn wood and art and it looks just like a soldering iron. whats the difference? can i use a wood designer as a soldering iron to melt metals together? i have an ho scale train set and the pieces are better soldered...