Our body
In some ways our body is like a machine. A machine, such as a car engine, needs energy to do its work. The engine burns fuel, usually petrol. The fuel is combined with oxygen form the air. Energy is released.
There are many likeliness between a machine and the human body. But there are some differences that make us better than a machine. For example, our body can change food into living material and it can grow. Machine cannot do these things. They cannot feel or see and they cannot think and learn as human beings do. The human body can reapir worn-out parts. It can even produce new human beings. There is something very special about the human body. It is alive, but machine are not.
The human body has many kinds of organs. For example, it has the skeleton to hold the body erect. It has muscles to move the body. It has the blood to carry food to all parts of the body. Our body has the brain to think with. It has the nervous system to control the muscles through our senses. Information comes to us through our eyes, ears, nose, tongue, skin an some other senses. These senses tell us what is going inside our body.
Question :
one similarity between our body and a machine is that both……