That's the issue with this question. What is life? Common definitions would never think to consider anything other than things in our 3D physical world. Can Li

That's the issue with this question. What is life? Common definitions would never think to consider anything other than things in our 3D physical world. Can Life Exist in 2 and 1 Dimensions? Sure, if we're willing to define "life" generically enough. If not, then no.