A third political party is usually formed to bring a particular issue into focus. A heart condition known as fibrillation occurs when the heart's muscle fibers do not work together properly. A lad was introduced to the great philosopher Socrates as a brilliant child with great promise. The best way to paddle a canoe is to kneel in the canoe while propping oneself against a narrow seat. Some animals eat only one particular plant or other animal.
Most animals depend on a relatively limited number of foods.
The human species, on the other hand, can and does live on a wide variety of foods. One people's diet in one part of the world is very different from that of another people in another part of the world. Another evidence of human ability to adapt to many kinds of environment is seen in variations in housing. It is instinctive for chickens to peck. A very young chick will peck at small objects on the ground around it.