Yeap and there is a difference between chapters 1 and 2... which is because the Book of Gensis is a grouping of like books... there is a hint that Adam is a name for more then one person, and that God created man and woman at the same time... this and other books hint that Eve is the third option for Adams wife (apparently wives made the sameway as Adam are too independent).

Anyhow most of the stories can be traced back in pieces to other older civilisations.