A number line can represent that are north and south of a highway. Decide whether you want positive positions to be north or south of the truck stop. Then plot the following position on a number line. a. The truck stop
b. 5 miles north of the truck stop
c. 3.5 miles south of the truck stop

These shark species, like the hammerheads (Sphyrnidae ), maintain a placental link to the embryo, similar to humans. In aplacental viviparity, also called ovoviviparity, there is no placental link. The most common type of reproduction in sharks, ovoviviparity occurs when the egg hatches while still inside the mother.Apr 30, 2018