Let's Practice! a. 1 Trace the flow of blood within the heart and lungs. the given blue arrow is an example on how to trace. a. 2 identify the parts that are numbered.

In the context of the box model, what is the difference between a margin and a padding? a. a padding lies outside a box border, while a margin lies inside it. b. a padding lies inside a box border, while a margin lies outside it. c. a padding can be adjusted independently, while a margin depends on the size of its box. d. a padding depends on the size of its box, while a margin can be adjusted independently.