Bronchitis is an infection which affects the bronchi. bronchitis is an illness of the digestive system immune system cardiovascular system respiratory system

The correct answer is option - Respiratory system.

Explanation:

Bronchitis is an respiratory system illness that affects various organs of the  respiratory system. It is inflammation of the bronchial tubes. These tubes are carry air to lungs of an individual.

Bronchitis can cause wheezing, short breath, mild fever and chest congestion. The bronchitis can be acute bronchitis or the chronic bronchitis.

Thus, the correct answer is option- Respiratory system.

from my research i have to the conclusion that decomposers, such as fungi, bacteria and invertebrates, play a critical role in nutrient cycling and without them the earth's ecosystem may not support life as we know it. elements such as carbon, nitrogen and phosphorus exist in limited amounts on earth, although huge amounts of carbon are being released into the atmosphere from underground sources now by humans. it is still extremely important that other nutrients be retained by the process of re-use. decomposers are organisms that are able to chemically break down dead material and make these elements available for use by other organisms. without this breakdown of dead material, dead bodies would pile up. so decomposers also play a role in clean up also. without them, life might not continue as we know it and dead material would overwhelm the earth.