We study sequential colonies introduced in [5], [9] from the point of view of their environmental structures. We give expressions for the languages Life, Garden-of-Eden, Doomsday and Non-life and we present conditions for the emptinessof these languagesfor the sequential colonies with basic and terminal mode of the derivation. I{eywords: b mode colony, t mode colony, garden of Eden, life, doomsday and nonlife states and languages,characteristic vector of the environment