There are more trees in our world? We need to take steps to protect it, not to destroy it. Oxygen is a colorless. Yeah, we all know that oxygen has no color, but it has a pale blue color in its liquid form. And in a periodic table there is a Wandly letter we cannot find, which is that it's a J. You can check the periodic table once or twice, but you cannot find a letter J in it. Pananas are radio active