Put the sentences in the logical order: 1)it is possible that many of these plants could become important medicines. 2)this is perhaps why many people today want to help protect this special area of the world. 3)brazil,with a third of the world^s rainforest,has fifty-five thousand kinds of flowering plants. 4)half of these are only found in the brazilian amozon. 5)the amazon starts in the centre of peru and travels across brazil for about four thousand kilometers.