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Topics covered in this volume include: transformation morphology on structures in the head of cichlid fishes; the structure and function of fish liver; atretic follicles and corpora lutea in the ovaries of fishes; effects of gill dimension on respiration; and the efects of pesticides on fish.
Malaria is one of the most widespread and devastating infectious diseases in the world. More than half the world population residing in over 100 countries is at risk of infection from this vector-borne disease. An estimated 250–500 million mal- ial cases occur each year, resulting in nearly one million deaths, the overwhelming majority of which are children. Because of the magnitude of the associated fata- ties, development experts consider malaria a ‘silent tsunami,’ comparing its death toll to the Indian Ocean tsunami (IOT) that ravaged several countries of South and Southeast Asia on December 26, 2004. That tsunami killed some 300,000 people (including children) at once. Globally, m...
Moving chronologically through America's past, from the antebellum and postbellum periods, through the Jim Crow era and the Cold War, to the present, this volume introduces an important new framework to the field of lesbian and gay history - that of the region.
Offers an innovative study of visual traditions in modern medical history through debates about the causes, impact and spread of AIDS.
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First Published in 1998. Routledge is an imprint of Taylor & Francis, an informa company.
The Study of Organophosphate pesticide has recently become a subject of biological interest because of their hazardous potential, low concentrations with growing industrialisation metals & pesticides to water is increasing day by day. Chemical pollutants mostly arise from industrial processes. The pesticide are introduced into the aquatic system, rocks,volcanic eruptions and a number of human activities such as mining processing. There is evidence that the level of pesticides in fresh water, lakes, and rivers has been rising in recent years. Pesticides poisoning products a crippling and after fatal diseases. Pesticides causes a major problem in aquatic environment..