Answer:
D. Diaphragm is the muscle below our lungs that helps with respiration (breathing).
The following are the ways to keep the lungs free of germs and dirt from the air:
Mucus found in the bronchial tubes collects dirt and germs that gets into your lungs.
Tiny hairs called cilia work to sweep out the debris collected to keep your lungs clean.
<u>Explanation</u>:
The lungs are air-filled organs that are responsible for breathing. Lungs are located on either side of the chest. Exposure to pollutants should be avoided to maintain the lungs healthy and clean.
Cilia are tiny hair-like cell structure that is located on the surface of the cells. These tiny hairs help in sweeping out the collected debris to keep the lungs clean.
Mucus is a substance secreted by the mucous membranes and is found in the bronchial tubes. The dirt and germs are collected by mucus and prevents that from passing into the lungs.
Answer:
didn't put any options. but cross contamination is one
A shoukd be the answer to this
