This document addresses the occurrence of fauna and flora@ including its main effects on electrotechnical products. Exposure and damage from the effects of fauna and flora can occur at almost any time in a product's life cycle. Moreover@ there are many agents of attack with various actions. This document addresses the occurrence and damage arising from fauna and flora in all locations a product can be stored@ transported or used. Generally@ fauna can be present and cause damage to products in both the natural environments experienced in open-air locations as well as in artificially created environments@ such as in a warehouse or building. However@ flora will predominantly be present and cause damage to products only in open-air locations. Fungus and bacteria can be present in both open-air locations as well as in warehouses or buildings.