State whether the following statements are True (T) or False (F). 27 The moai were constructed whenever a famous person died. 28 They were set up facing out to sea to protect and warn of danger. 29 Some of the moai had imposing hats or topknots. 30 Heyerdahl's theory about the Islander's origins was disproved. 31 The riddle of the moai's construction has never been solved. 32 The Easter Islanders succumbed to European diseases. 33 An ahu was a stone platform. 34 The wars were caused basically by extreme population pressure. 35 Kevin Costner built some magnificent stone moai for a film. 36 The red volcanic stone for the moai hats came from the volcano Rano Raraku. 37 The differing waves of native arrivals on Easter Island could be distinguished by their facial features. 38 Today there are about 3000 pure-blood islanders living on Easter Island. 39 The ruined villages have been rebuilt as tourist attractions.​