Explanation:
A stem cell is a cell with the unique ability to develop into specialised cell types in the body. In the future they may be used to replace cells and tissues that have been damaged or lost due to disease.
C, because it protects the cell from the outside environment
The golf would weigh less than a gram, and the ball, if hit hard, would fly at least very far away due to the kinetic energy without any atmospheric drag.
No, because DNA is a natural fact of a humans body.