What is associated with: about 3000 bs the sumerians invented this writing system which used triangular marks?

Based on the clue 'about 30 of all animal species are these insects w...', what is the answer? Based on the clue 'about 30 of the worlds bananas are sold under this...', what is the answer? Based on the clue 'about 30 years ago this south american game create...', what is the answer? What is associated with: about 300 miles southwest of lhasa 29028 feet? What is associated with: about 3000 miles wide its name is from the arabic for desert? What is associated with: about 300000 passenger cars cr? What is associated with: about 300000 passenger cars zw? What is associated with: about 300000 people in africa suffer from sleeping sickness spread by the tsetse variety of th…