Darwin noticed the beak of finches on each Galapagos Island were slightly different and matched the food found on each island. They were all different than the finch beaks on the nearby South American coast. All around the world we see slight variations of organisms based on their
environment. This evidence for evolution is called
biogeography.
embryology.
fossils.
Anatomy.
molecular

Wetlands form where water and land meet. a lake with a wetland fringe can fill in with decayed plant and animal material to become a wet meadow. a pond can fill in to become a bog or fen. sediment can fill in a river marsh to become a swamp.flooding of coastal lowlands from rising sea levels has created broad coastal marshes that are protected from wave action by barrier islands or reefs. coastal wetlands also form when rivers deposit sediment as they reach the ocean. plants then take root and hold the soil firm against the forces of tides and waves.