Keratin is an intracellular fibrous protein that gives hair, nails, and skin their hardness, strength, and water-resistant properties. The keratinocytes in the stratum corneum are dead and regularly slough away, being replaced by cells from the deeper layers
Hope this helped!
Good luck :p
~Emmy <3
The answer is actually "to prepare for special medical needs' I took the test
Answer:
2: Amount of precipitation, average temperature
3: Desert
4: The tundra
5: All of the above
