Infants can distinguish between approximately percent of phonemic contrasts heard in the world

Phonemic contrast is the minimal phonetic difference, the small differences in speech sound. 
Infants have the ability  to distinguish among all of the contrasting sounds in all of the human languages. This is lost after six months.
Infants can distinguish between approximately 90 percent of phonemic contrasts heard in the world

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.