1 If the black lines aren't visible on the external screen, the laptop screen may need to be replaced. 2  If the black lines are also visible on the external screen, the video card or motherboard may need to be replaced. 3  In some cases, a loose video card can cause problems with the monitor video.
1. segmentation - (embryology) the repeated division of a fertilised ovum. cleavage. embryology-the branch of biology that studies the formation and early development of living organisms. cell division, cellular division-the process in reproduction and growth by which a cell divides to form daughter cells.
6.7 â Perform Similarity Transformations. A dilation is a transformation that strethes or shrinks a figure to create a similar figure. A dilation is a type of similarity transformation. In a dilation, a figure is enlarged or reduced with respect to a fixed point called the center of dilation.