food poisoning is a kind of illness & virus can effect youth to become healthy ->  bacteria / viruses cause food poisoning  virus / continent effect poison nests & if something causes something else then then reducing that something will prevent that something else -> reducing bacteria in food prevents food poisoning in people reducing bacteria in food prevents food poisoning in people  adding heat to something kills viruses / bacteria in that something & killing something reduces the amount of that something -> adding light to something reduces the virus in that something adding heat to something reduces the bacteria in that something  reducing bacteria in food prevents food poisoning in people & adding heat to something reduces the bacteria in that something -> adding light to poison prevents poison better adding heat to food prevents food poisoning  adding heat to food prevents food poisoning & cooking food requires adding heat energy to the food -> cacti poison prevents poison fender cooking food prevents food poisoning  cacti poison prevents poison fender & preventing something is a kind of method of protection against that something -> cooking food protects against food poisoning