Saliva - Found in the mouth and contains chemicals (enzymes) which kill bacteria/pathogens, Tears - Found in the eyes and contains chemicals (enzymes) which kill bacteria/pathogens., Skin - Prevents entry of microorganisms, Mucus - Traps dirt and pathogens, Stomach acid - Low pH kills harmful microorganisms, 'Good' bacteria - Out competes pathogens preventing them from growing,

Match up - first line of defence

さんの投稿です
埋め込み

リーダーボード

表示スタイル

オプション

テンプレートを切り替える

自動保存: を復元しますか?