空氣污染

空 = 工 + 穴 : Mnemonic symbol: an air conditioner

空 = 工 + 穴 : In front of the engine, Karl Koala found some very special cave paintings. Using steel beams he constructs a protective cover. He also installs air conditioning to make the best environment possible to preserve the cave paintings.

Mnemonic symbol: a balloon. The Queen of Hearts is disappointed by her balloons. She expected them to float upwards, but in the space station's bathroom, They float randomly in all directions.

污 = 亏 + 氵 : It looks like a dumping ground in front of the space station (Ø1). Willy Walrus (w) and the lucky leprechaun (亏) decided to get rid of the pollution (污) and start collecting all the empty water bottles (氵) floating around.

污 = 亏 + 氵 : It looks like a dumping ground in front of the space station (Ø1). Willy Walrus (w) and the lucky leprechaun (亏) decided to get rid of the pollution (污) and start collecting all the empty water bottles (氵) floating around.

染 = 木 + 氿 : Robinson Crusoe (r) finds that there is a small mountain spring (氿) in the anthill (an3). Unfortunately it is contaminated (染) by a plastic Christmas tree (木) standing next to it. The BPA and dye from the Christmas tree leak into the water and change the creek's color (染).