The endemic lava cactus (Brachycereus spp) cactus growing in the Galapagos Island Archipelago, UNESCO World Heritage Site, Ecuador, South America

galapagos lava cactus brachycereus endemic species biodiversity ecology flora volcanic landscape conservation south america plant life nature desert plants endemic plants environmental adaptation habitat wildlife tropical environment growth ecology education cactus habitat unique ecosystems natural beauty plant diversity arid conditions endemic vegetation survival botanical study natural heritage rocky terrain sun exposure ecological significance evolution rare plants conservation efforts geological formations sunshine climate endemic qualities natural wonders ecological balance vibrant ecosystems species preservation island ecosystem volcanic islands