Contour lines on a topographic map, connect lines with: Question 1 options:

the same rock layers

the same height above sea level

equal slope moving away from the line

equal amounts of rainfall

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The same height above sea level.

Explanation:

The distinctive characteristic of a topographic map is the use of elevation contour lines to show the shape of the Earth's surface. Elevation contours are imaginary lines connecting points having the same elevation on the surface of the land above or below a reference surface, which is usually mean sea level.

cell differentiation  is how generic embryonic  cells  become specialized  cells. this occurs  through a process called gene expression. gene expression is the specific combination of genes that are turned on or off (expressed or repressed), and this is what dictates how a  cell  functions.

explanation: