When the skin is injured, new cells repair and replace the damaged tissue. How do these new cells use nutrients during this process? Nutrients reinforce the cells' structure so that the injured area cannot be harmed again.

Nutrients help break down the cells so pieces of them can be placed over the injured area

Nutrients provide energy that the cells use to reproduce so that they can fix the injured area

Nutrients direct the cells from other parts of the body to the injured area to help prevent blood loss.

For cyclohexane compounds drawn in a chair conformation:   -axial bonds are vertical  -equatorial bonds are parallel to two bonds within the ring.  thus, as i assume the chair conformation is drawn:   -the x group is in an axial position, as are the five other vertical bonds.  -three axial bonds are on the top face of the ring  -the other three axial bonds are on the bottom face  the position of the second substituent on each ring carbon is equatorial.  gauche groups must be on an adjacent carbon such as carbon 6 and carbon 2, and also gauche groups are rotated by 60 degrees relative to each other.  drawing the newman projections for c1–c2 and c1–c6 aids in visualizing the groups that are gauche to the y group on c1.  click this link and watch some academic videos that may you more understand the topic 

True is ur answer : )

Not a  mixture of two common elements that can be separated by physical means.