Unit (6 – الامارات 2024.

which means they cannot hear at all or only

. to some degree

The eyes work like a camera. They take in light

from the thing we are looking at and make a tiny

picture of it on the back of the eyeball. Nerves

inside the eyes take a message to the brain

about the picture.The brain tells us what it is we

. are looking at

When we breathe, air goes into our nose through

the nostrils. Inside the nose there are lots of tiny

hairs. They catch bits of dust that are in the air

Damp, sticky stuff called mucus traps more dirt

.and germs as they enter the nose

The tongue is covered with about 10,000 very

tiny bumps called taste buds. Taste buds on

different parts of the tongue taste different

.things; sweet, sour, salty, and bitter

,brain that tell us about what we are touching

,such as whether it is warm, hot, cold, painful

. soft , prickly, rough, sticky