Once Upon a Time... Life
The ear is composed of cells that sense vibrations and transmit them to the brain. Then, the brain transforms them into words and sounds.
You Might Also Like

Series
Once Upon a Time... The Explorers

Series
Once Upon a Time... The Discoverers

Series
Once Upon a Time... The Americas

Series
The Crocodile Hunter

Series
The Joy of Painting

Series
Nature

Series
The Dinosaurs

Series
Blue Planet II

Series
Our Planet

Series
Planet Earth II

Series
Antiques Roadshow

Series
Planet Earth III

Series
Planet Dinosaur

Series
Dynasties

Series
Frozen Planet II

Series
Seven Worlds, One Planet

Series
Headspace Guide to Meditation

Series
Who Do You Think You Are?

Series
Penguin Town

Series