What is linear sea?

What happened to the immigration building on June 14 1897? Where is the Hobo Museum in Britt Iowa located? What are the countries that are touched by the waters of the persian gulf? Why is Mediterranean sea water more dense than Atlantic Ocean Water? What are facts about Chowan River? How was george mallory found on mt Everest and who? How would you compare a liter of cold water with high salinity and a liter of warm water with low salinity? Refunds at Alton towers? Why is the weltwischia plant adapted to the desert life? How many people visit Alcatraz prison each year? Are forests an important natural resource in Ecuador? Do zoo animals die younger? What is the purpose of the oil gallery? Which two landforms is the Atacama Desert located in? What piece of technology did the sailors use when they sailed across the Atlantic ocean? What lake lies between Russia and Iran? How does the rain forest affect the air you breathe? Is Dover beach flat or sloping? What is the specialties of the nile river? How many miles deep are some of the parts of the grand canyon?