## Step3

What happens with the skin in warmth or cold?

To the right you see the same bit of skin two times.

In one of those drawings the skin is in a warm environment, the other is in a cold environment. In the drawing you see a hair, a muscle (for erecting the hair), a sweat gland and some blood vessels.

Take a good look at the differences between both of the drawings. Write the differences down.

Which drawing do you think is from a cold environment? And which is from a warm environment?

Discuss your answer with a classmate. Do you agree with eachother? If not, ask a third classmate.