Archebacteria are known as extremophiles. which one of the following justifies this statement? archebacteria can prepare their food using photosynthesis unlike eubacteria. archebacteria can cause extremely severe diseases in humans, unlike eubacteria. archebacteria can survive in extreme conditions, including without sunlight and oxygen, unlike the eubacteria.

an adaptation is a change or process by which an organism takes to be better suited for its environment. for example; migration is a behavioral adaptation, this is needed because birds are not built to last extremely cold climates. there are different adaptations because there are different species needing to adjust to different things, bears don't migrate; they hibernate.