They are important because so people do not get sickness
Answer:
Explanation:
During exhalation, the diaphragm also relaxes, moving higher into the thoracic cavity. This increases the pressure within the thoracic cavity relative to the environment. Air rushes out of the lungs due to the pressure gradient between the thoracic cavity and the atmosphere.
improved water habitats for human recreation.
Using things such as the internet. For example, if a scientist wanted feedback, he could turn to an org of other scientists across the globe and get their help.
