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.
These compounds are made up of carbon, oxygen, hydrogen and chlorine atoms. The number of the chlorine atoms and their positions in the dioxin molecule are what determines the toxicity of different dioxins. The most toxic dioxin has four chlorine atoms in positions 2, 3, 7 and 8. This dioxin ( 2, 3, 7, 8-tetrachlorodibenzo-p-dioxin) is often referred to as TCDD or âdioxinâ.