Your brain is more powerful than a supercomputer. There are 100 billion microscopic cells called neurons that are constantly relaying
information inside of your head. In fact, it would take more than 3,000
years to count all the neurons in your brain. Every time you read, laugh,
think, talk, run, or move, chemical and electrical signals race around on
neuron highways inside of you, transmitting messages to and from your
brain. Your neurons send more messages than all the phones in the world.
Even as you think about this, your neurons are firing! Isn't the brain an
incredible part of the human body?
Question:
The main idea of this passage is that the brain is very powerful. Which
idea is least important to the passage?
It would take more than 3,000 years to count all the neurons in your brain.
Signals race around on neuron highways inside of you,
Your neurons send more messages than all the phones in the world.
The brain is an incredible part of the human body.