The correct answer is telephone.
Telephone arose from an attempt to help hearing-impaired people.
Telephone is termed as a telecommunication which allows either two or more users to have a conversation while they are apart and to be heard directly.
Telephone converts human voice or sound to electronic signals which are being transmitted through cables.
Some of the elements which are essential in telephone are earphone which are termed as receiver and microphone which is the transmitter.
Most of the telephone they have a ringer which produces a sound to show that there is an incoming call.
Because it is easier to have a chain of command established with the staff if only one person is the leader. Companies and corporations also save money in the practice of only having a single leader or "boss."
I don't know if that answer will exactly help. :)
Answer:
The cardiovascular system consists of the heart, blood vessels, and blood.
This system has three main functions: Transport of nutrients, oxygen, and hormones to cells throughout the body and removal of metabolic wastes (carbon dioxide, nitrogenous wastes).
Answer:
Your heart will beat about 115,000 times each day.
Your heart pumps about 2,000 gallons of blood every day.
And false it does not it just adjusts to the other things in your body.
Explanation:
