"B" is for Bacteria

Zillions of bacteria are all around us! They are so small that we cannot see them without the help of a microscope. While some bacteria make us sick, other bacteria are used in medicine to keep us healthy. Bacteria keep our eyelashes clean, give yogurt its sour flavor, and even help bread rise. Bacteria also help make compost. For instance, one type of bacteria warms the compost pile so that other bacteria can survive. As bacteria break down organic matter, nutrients are released into the compost.