I think option 4 okay coper thnaks u
When stem cells grown on hard, rigid surface, then they became bone cells. Researchers demonstrate in Nature materials that human mesenchymal stem cells grown on a rigid substrate for some time become biased toward differentiating into bone-cell lineage, whereas cell grown on softer surfaces are just likely to eventually follow a bone or fat cell fate.
Endosymbiosis
that is my explanation hopefully its right
<span>A surgeon opens her patient by cutting the integument parallel to the cleavage lines of the dermis this will result in faster healing of the skin and less scaring. Scaring is a natural process, when the skin repair in itself. faster healing of the skin and less scaring is the mostly important of the patients. patients are likely to faster healing of the skin and less scaring.</span>
Explanation:
Igneous rock is formed through the cooling and solidification of magma or lava.
