Answer:D
Explanation:The reason is because a chemical change is that happens due to a type of chemical such as a oven or microwave heating it up and dough is heating up and forming crust and you can’t change it
Air must pass from the back to the front of the pharynx to enter the trachea and food must pass from the front to the back of the esophagus
The maximum time a person could listen to a sound of 87 decibels is: 8 hours
<h3>Meaning of Decibels</h3>
Decibels can be defined as the unit used by scientists to measure sound level.The values of Decibel ranges from a very low value to a very high value and the higher we get the more dangerous it is to our human ear.
In conclusion, The maximum time a person could listen to a sound of 87 decibels is 8 hours
Learn more about Decibels and human hearing : brainly.com/question/1291668
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The answer would be A. thick filaments!
