Compléter Bacteria - Level 3Version en ligne Vocabulary Game par Nao Now Lessons 1 Bacteria live everywhere - - inside , the ocean , playgrounds , and even inside our bodies . These are so small that scientists need to use microscopes to study them . Most bacteria are good , but there are some bacteria that are and can make you sick . Scientists study bacteria to learn how they cause disease and help create to prevent bacteria from harming us . Good bacteria live in all parts of our bodies , they help us digest food and maintain skin . Bacteria also live in the soil and the food that we eat ; they help add and keep food fresh . Good bacteria help make some foods like yogurt , miso , and kimchi . your hands often is a good way to keep bad bacteria away from you but remember that not all bacteria are bad .
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