The right answer is They compare quantities for particular categories.
The bar graph is composed of horizontal bands. The categories are presented on the ordinate (Y axis - vertical). The length of each bar is measured by the values arranged on the abscissa (X axis - horizontal).
It draws attention to the comparison of values rather than a period followed by time (as in the case of the bar chart).
2 identical daughter cells
B positive patients can receive blood from B positive, B negative, O positive and O negative donors.
It’s the second one. H,D,C,F,B,G,E,A
