Pregnancy or child birth.
The answer is Atlantic Ocean ; Pacific Ocean.
A continental divide is a divide that separates continent’s watersheds. A continent may have more than two watersheds. For example North America has five continental divides. But United States is divided into two very large watersheds, one which drains into the Atlantic Ocean and the other into the Pacific Ocean.
Two molecules of oxygen atoms are present in the oxygen molecule and ozone molecule has three oxygen atoms.The oxidation potential of ozone is higher as compared to that of oxygen so it can whirl some oxidation processes much faster than that of oxygen. The densities of both the molecules are also different.
I believe your answer is a. cuz the rest of them say lungs and ampibians dont have lungs they have gills
