Four years ago, with the UK beginning to emerge from its latest Covid-19 lockdown, teacher Damaris Bateson asked her new intake of Year 7 students to write letters to their future selves. In the ...
Sterilising water Cholera Chemicals or UV light kill pathogens in unclean water. Suitable hygiene - food Salmonella Cooking foods thoroughly and preparing them in hygienic conditions kills pathogens.
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