Digestive system: Introduction

Still smoking????

STILL SMOKING????

First watch the video, then do these exercices

1-      Briefly explain what this experiment is about.

2-      How many mg of Tar can you find in a cigarette?

3-      What is the basic process on the first step of the experiment to obtain the tar?

4-      What are the visual changes of the water during the experiment?

5-      What’s the final step to obtain the tar segregated from other elements?

6-      Make your own reflections/conclusions about the experiment and of course take your own decisions. SHARE THIS WITH FAMILY AND FRIENDS.

The digestive system

The digestive system

Enzymes , proteins, carbohydrates digestion

Exercises

Respiratory system

Exercises

Enciclopaedia britannica film

Digestive system