It requires good communication.
1. A calorie is a unit that is used to measure energy.
Answer:
Hmm.
Explanation:
A hearing aid amplifies sound waves.
<em>'A hearing aid is a small electronic device that you wear in or behind your ear. It makes some sounds louder so that a person with hearing loss can listen, communicate, and participate more fully in daily activities. A hearing aid can help people hear more in both quiet and noisy situations.'</em>
