The African elephant is the larger of the two species.
The head of an elephant heard would be the matriarch, which would be one of the oldest and more experienced females of the heard. Fully mature males (Bull's), don't usually stay with the heard,...
Avogadro's constant, about 6.022 x 1023. A mole of anything is Avogadro's constant.
no
because it can trap mud and water in the lines (or as you think of it cracks.) and that cools it off