And they need to be dealt with as they spread diseases and are a health hazard.
If they think that it would be a health hazard to stay here, then we will leave.
In these places the teaching is mostly dreadful, syllabuses are outdated and facilities can be a health hazard.
But if the unkempt office plant in the corner is left untended it can soon turn into a health hazard.
If the US government officially states that video games are a mental health hazard without conclusive evidence, that sets a dangerous precedent.
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The inhalation of these fine dust particles represents a health hazard that was known to the military as long ago as 1974.
Some other Nato countries also use munitions with DU, which has 40% less radiation than natural uranium, itself not considered a health hazard.
But Irena Hopkins, deputy mayor of Ammanford in Carmarthenshire, argues that pests, particularly rats, are a public health hazard for which councils should take responsibility.
Boca Raton Police Chief Andrew Scott said officials have assured him that the renewed activity by investigators poses no health hazard to the surrounding community.
Residents believe the stack of uncollected bags was a health hazard.
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"In my mind there is not a human health hazard based on what has been shown to date, " says Novo Nordisk Chief Scientific Officer Mads Krogsgaard Thomsen.
Smoking rates of 40% or more of the population are common in these regions, making for an extra-tough health hazard when medical services are as limited as filterless, hand rolled smokes are plentiful.
Those who maintain that the facility will represent a health hazard to its employees and individuals in the adjacent community have no supportable evidence of any detrimental effects on humans, plants or animals.
In 1996, a judge in Delhi went into her court one morning and started her own case against the municipal authority for creating a health hazard by allowing rubbish to pile up in the streets.
Because they believe the levels of bisphenol A (BPA) that migrate from the can linings are a health hazard as they equal the amount of BPA given to animals in experiments where adverse health effects were found.
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"There's just a cleaner way to catch striped bass...something that doesn't pollute the environment, that doesn't contaminate fish and doesn't represent a health hazard to the consumer of this fish, " says Ronald Domurat, a beach ranger and derby committee member.
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The World Health Organisation has classed one dioxin as a serious hazard to human health.
"From what we can see, our current methods of intervention may pose a greater hazard for health than letting the natural history run itself out, " Mohr said.
Friends of the Earth is running a campaign for more regulation of chemicals which might prove a hazard to human health.
In 1986 London Greenpeace, a bunch of environmental activists (unconnected with the better-known Greenpeace), published a leaflet denouncing McDonald's, the hamburger chain, as a hazard to human health, a killer of animals, a destroyer of the environment and a mean employer.
Certain findings that seem to point to the existence of a hazard have been trumpeted by groups like the Environmental Health Trust and the BioInitiative group.
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