Plant defense against herbivory which differ from one another in both functional groups, and in basic carbon skeletons. Monoterpenoids, continuing 2 isoprene units, are volatile essential oils such as citronella, limonene, menthol, camphor, and pinene. Diterpenoids, 4 isoprene units, are widely distributed in latex and resins, and can be quite toxic. Diterpenes are responsible for making "Rhododendron" leaves poisonous. Plant steroids and sterols are also produced from terpenoid precursors, including vitamin D, glycosides (such as digitalis) and saponins (which lyse red blood cells of herbivores). Phenolics, sometimes called "phenols", consist of an aromatic 6-carbon ring bonded to a hydroxy group. Some phenols have antiseptic
Tyseley Energy from Waste Plant Tyseley Energy from Waste Plant Tyseley Energy Recovery Facility is a waste incineration plant in Birmingham, UK. It is run by Veolia. It was built in 1996 by Veolia to a design by Faulks Perry Culley & Rech. The plant has become a notable building in Birmingham with a lighting scheme that illuminates the plant during the hours of darkness. It was built to comply with the European emissions standards that came into force in 1996. Veolia benefits from Levy Exemption Certificates for the element of energy which is produced from renewable sources. This provides income to the City Council.