Earlier this month, the Obama Administration called for increased 41.________ (protect) of the world's most southern continent, Antarctica. 42.________ (scientist) say climate change and human activity have 43.________ (increase) led to the melting of massive pieces of Antarctic ice. The disappearance of ice will not only affect wildlife 44.________the area such as seals and penguins. The melting will also cause oceans and seas around the world 45.________ (rise).
This represents a major threat, 46.________(especial) to coastal areas. For example, the ancient city of Venice, Italy, has long been threatened by rising sea levels. The situation 47.________ (make) worse by the fact 48.________ its ancient buildings, built on a body of water 49.________ (call) a lagoon, are slowly sinking.
Rising sea levels are not the only threat. The salty water is also destroying Venice's famous buildings and artworks. The Italian government is trying to fix 50.________ problem with the construction of a sevenbilliondollar system of moving flood barriers.
