Describe at least two advantages and at least two disadvantages of using embryonic stem cells to repair damaged tissue due to injury or disease. Be sure to use a topic sentence and conclude with a summary.

Are you asking about a street map usage  if so here is your answer  a street map for a very limited area could simply be a bit map or a .jpg image.  but a more general map would probably store the streets as vectors.  but you shouldn't assume that there is one way to do it

When scientist examine data such as historical documents, they are using the "scientific methods"