1) contain a chemical substance that kills some bacteria a) eyes b) stomach c) skin d) nose e) windpipe 2) contain acids that kill the bacteria in the food that we eat a) eyes b) nose c) skin d) stomach e) windpipe 3) contain mucus which traps germs a) skin b) eyes c) windpipe d) stomach 4) act a barrier to stop germs for getting into the body a) stomach b) skin c) nose d) eyes e) u

body defences mechanisms

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