Mepụta a ọzọ mgbagwoju mbipute nke ahịrịokwu a The agwaetiti nwere a na-adịgide adịgide size nke n'okpuru, gbakwunyere ihe intertidal mpaghara nke a n'ihu.
N'ezie, ụdị okwu dị mgbagwoju anya nke ahịrịokwu ahụ bụ "Agwaetiti ahụ nwere oke na-adịgide adịgide nke n'okpuru, gbakwunyere mpaghara intertidal nke ọzọ, ma mejupụtara nchịkọta nke glacial till nke na-ebili elu karịa oke osimiri. "