You pour in salty h2o and Allow the Sunlight do the work for just a number of several hours. Then, hey presto! You've thoroughly clean water! It’s a quite simple unit and relatively low-cost to make. Go through the subsequent passage and circle the letter A, B, C or D https://de-cuong-12111.bleepblogs.com/30878431/the-5-second-trick-for-de-cuong-on-thi-ghk-1-anh-10