Dna , rna, and starch these three are important biomolecules that play a vital role in your life even though you have never seen them.
Hairs are mostly fibrous proteins and are composed of keratin, and also the main constituent of skin, nails, wool, woof, feathers etc.
Keratin is the essential fibrous protein which has a structural and protective functions in the epithelium.
Yes. Oxygen crash led to Cambrian mass extinction
SUGAR = that’s the pro-fix glu in glucose
The inside of your nose is called the nasal cavity. A mucous membrane lines your nasal cavity and it helps keep your nose moist. Little hairs inside your nasal cavity help filter the air you breathe in and block dirt and dust from getting into your lungs.
Here's the link for you to go more in-depth on your own. http://sciencenetlinks.com/student-teacher-sheets/mechanics-respiration/#:~:text=The%20inside%20of%20your%20nose,from%20getting%20into%20your%20lungs.
