Our elbow bends all the time, we bend it when we pick up things, when we eat, when we do mostly everything. Cows on the other hand dont pick up food with there feet, they use there mouths, and they probably only bend when they are walking.
The rapid release of air/ gas bubbles during cooling
An organism that lives in or on another organism and gets its food from or at the expense of its host
The correct answer would be Louis Wirth
