> Disease - animals regularly given antibiotics being so many in such a small space means disease could spread rapidly
> Use of drugs - antibiotic resistance from over-use of antibiotics. Resistance passed onto bacteria that cause human diseases. Other drugs given to improve growth / reduce aggressive behaviour. These may alter flavour / pass into foods then humans affecting health
> Animal welfare - larger intensive farms have resources to maintain high level of animal welfare & are more easily regulated. Animals kept unnaturally - may cause stress > aggressiveness & harm towards others / themselves. Restricted movement - osteoporosis & joint pain. Well-being of animals often sacrificed for financial gain.
> Pollution - large concentrations of waste produced in small area > pollutes rivers/ground water. Dangerous / smelly pollutant gases. Larger units may have their own disposal facilities.
> Reduced genetic diversity - loss of genes that might have proved to be beneficial > due to SB
> Use of fossil fuels - heating the farms, production of materials for the building, production & transportation of animal feeds. The CO2 released increases GW.
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