C 1650 Because you have to factor in the difference of BC and AD. you must get 1200 BC to 0 first, and then go to 450, therefore getting 1650
Make products more bio degradable
I don't think so I believe you would let them get air inside and that's the sign that he/she is alive and breathing so you don't wanted to push the air out of there lungs when you were trying to get air in there lungs
Hope this helps have a nice nite!