1 ALEX in Braille (Blind) Alphabet 2  : ALEX in Sign Language 3  : ALEX in Morse Code 4  : ALEX in Marine Flag Language 5  : ALEX as a Barcode: 6  First Names which are compatible or rhyming with ALEX. They will be the best brother/sister names for ALEX.
Dioxin is a general term that describes a group of hundreds of chemicals that are highly persistent in the environment. The most toxic compound is 2,3,7,8-tetrachlorodibenzo-p-dioxin or TCDD. The toxicity of other dioxins and chemicals like PCBs that act like dioxin are measured in relation to TCDD.
See also GreenFacts' Digest on PCBs. 1.1 Dioxins refers to a group of chlorinated organic chemicals with similar chemical structures. Some have harmful properties, depending on the number and position of chlorine atoms in their chemical structure. One of the most harmful dioxins is known as TCDD. Some PCBs, which have similar properties, are considered dioxin-like.