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Pesticides Pesticide - Any substance used to kill, repel or otherwise control a pest. These include insecticides, herbicides, fungicides, rodenticides and disinfectants. Pesticides are designed to be toxic and can pose a risk to children, adults, pets and other creatures and plants. Common pesticides include herbicides for weed control, indoor ant and roach sprays, outdoor foggers, insect repellents, flea collars and pet shampoos. Synthetic fertilizers and pesticides have played a dominant role in agricultural intensification in industrialised and developing countries for decades. Although both have become widely distributed in the environment, most of the concern related to the health consequences of agriculture now centres on pesticides. 7 There are many reasons why pesticides are used, interspecific competition (competition between members of different species for resources) between weeds and crops as well as insects can cause much economic damage to a community, by causing crops to be lost, property damage from termites and tree...

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