Babies are born with reflexes or programmed responses to certain stimuli, such as touch. These reflexes help ensure survival. But they also provide an opportunity for a baby to interact with the world. For example, the rooting reflex is elicited by gently stroking a newborn's cheek.
Explanation:
The ribs are a set of twelve bones which form the protective 'cage' of the thorax. They articulate with the vertebral column posteriorly, and terminate anteriorly as cartilage (known as costal cartilage). As part of the bony thorax, the ribs protect the internal thoracic organs.
Once this initial energy is added, the wave travels through the medium until all its energy is transferred. In contrast, electromagnetic waves require no medium, but can still travel through one.
