TROBITW

• Of the the thousands of bacteria that live on earth, only a few a few
• of the hundred cause diseases, like strep throat or a cavity in your
• tooth.

Nitrogen

Plants need nitrogen to grow, the gas makes up 78% of the air. Nitrogen-fixing bacteria take in nitrogen from air and change it into form that plants use.

Recycling

Decomposed bacteria break down a dead plants and animal matter, like in a gardener's compost pile.

Food

People raise bacteria for food products, mostly dairy. Every time you eat cheese, yoghurt, buttermilk or sour cream, you are also eating bacteria. Lactic-acid producing bacteria break down sugar in milk (lactose).
Bacteria change lactose into lactic acid. This preserves and adds flavour to the food.

Medicine

Antibiotics- used to kill bacteria and other microorganisms. Many antibiotics are made by bacteria.

Insulin- Insulin breaks down and uses sugar and carbohydrates. In 1970's, scientists discovered how to put genes into bacteria to produce human insulin.

And that's the beautiful roles that bacteria play 👍in our world.💁