To protect our eyes from moisture and light. Example: from sweat. It can also reduce the amount of light that gets in your eyes and keep dirt away from them too.
The magnetosphere interacts with solar flares. It helps to redirect them. Otherwise, the Earth would be greatly heated and human life would become much harder to sustain, as homeostasis would require better cooling mechanisms.
First! Ask yourself... who, what, when, where
Answer and explanation;
-Stem cells, Adult stem cells and skin cells , have a similarities and they may also differ in a number of ways.
-A stem cell has not gone through the process of differentiation, so they have the potential to become any type of cell.
-Adult skin cells have gone through differentiation and cannot become another type of cell. Same case applies to the skin cells, they have already undergone differentiation;
-Similarity; The cells that are taken from the same person would have the same DNA.
-Difference; The skin cells and the adult stem cells have already gone through differentiation, whereas embryonic stem cells have not. The different genes that the types of cells have are turned on and off causing the differences.