Virtual water. Virtual water trade (also known as trade in embedded or embodied water) refers to the hidden flow of water if food or other commodities are traded from one place to another. For instance, it takes 1,340 cubic meters of water (based on the world average) to produce one metric tonne of wheat.
At the same time, researchers also say poor understanding of truly dangerous spider bites delays treatment when a person really has been bitten by a dangerous spider. For example, the bite of the brown recluse spider can cause death of a sizeable area of skin (skin necrosis) resulting in a deep, scarring ulcer. Yet even in areas infested with brown recluse spiders, true bites are uncommon. The analysis is published in the July 14 online issue of The Lancet.
What is the fear of spiders called? A: The fear of spiders is called arachnophobia. The term originates from the Greek word Arachne, which means 'spider', and the English word, phobia, which means an extreme aversion to or fear of something. Continue Reading. Sufferers of Arachnophobia purposely avoid contact with spiders because exposure leads to the experience of negative symptoms.