The answer is na sodium, bromine
Displacement reactions are useful for thermite welding, steel making, extraction of metals and relief from acid indigestion.
Camouflage, mimicry, and animals' body parts and coverings are physical adaptations. The way in which an animal behaves is an adaptation, too—a behavioral adaptation . Behaviors that animals are born knowing how to do are instincts . A lion preying upon a zebra and a bird building a nest are examples of instincts.