Why is a standard system of measurement important?
a.
scientists want to share measurement data that they can understand.

b.
each country wants its own set of measurement standards.

c.
measurements are seldom shared with scientists in different countries.

d.
scientists speak many different languages.

the answer

explanation:

the capillary tube was too close to the bottom of the beaker.

the ruler may have moved.

water got into the capillary tube.

the temperature was not allowed to equilibrate in the 2-4 minutes.

in cartography, a contour line (often just called a "contour") joins points of equal elevation (height) above a given level, such as mean sea level. a contour map is a map illustrated with contour lines, for example a topographic map, which thus shows valleys and hills, and the steepness or gentleness of slopes.

explanation: