I am working on adsense for more then 4 years and have tried all other networks as well i will suggest you not even to try anything other then adsense as other will pay you only 5 % of what adsense will.
Yes.....You can use some of the adsense alternatives(search on Google) in blogger.......Some of the alternatives pay really well......But adsense is still best in the market..........
Yes you can use adsense in blogger ? why not? blogger keep asking blogger to put adsense to make money.
Bangladesh boy took his time to come up with such a thoughful question.. I think I need time to think about the best answer, not easy..