There are many factors that influence the number of different kinds of plants in a biome. why is elevation, or height, a factor that influences what kinds of plants can live in any certain biome on earth?

Elevation, or height, is a factor that influences what kinds of plants can live in any certain biome on Earth because elevation determines the temperature of that place.

Explanation:

The most important factor that is responsible to make the plants grow in that particular area is the climate, and climate is determined by the height and elevation.As the elevation increases (i.e. height from sea level) the temperature of that place decreases. There are other factors like, pollution, humidity level etc. that determines the growth of biome on earth besides height and elevation.

The correct answer is c.

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