4.2 Daily Practice

Microorganisms are tiny thriving structures that can be found everywhere. This type of living being includes organisms such as mold and bacteria. Bacteria are single-celled and can be found inside the bodies of humans and animals. Serving the purpose of breaking down food, bacteria is widely found within of the stomach and intestinal track. While some bacteria is helpful, there are other types can result in sickness or the death of their host.

1

Which statement supports the idea that bacteria can be beneficial?

1

Which statement supports the idea that bacteria can be beneficial?

What is the purpose of the fourth and fifth sentences?