Describe the antarctic treaty

1)12 countries made it in 1959 they gave 6 principals -1-no mineral exploitation allowed -2-plants and animals must be concerved -3-areas of environment must be protected -4-rules for waste disposal, minimise waste -5-regualtions for sewage discharge from vessels -6-activities must have environmental impact assessment before hand 2)strict rules about introduction of non natives so ecosystem isnt disrupted, restrictions on eating drinking and weeing 3)globally agreed rules on tour operators only 100 visitors at one time 4)some think should be extended to cover ocean