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1. 
What is the objetive of digestion?
A.
Its to transform the food we eat into nutrients.
B.
Its to transform nutrients into food.
C.
Its to preparate and eliminate the undigested food.
D.
Its to transport oxigen and carbon dioxide.
2. 
What organ is involved in the excretion?
A.
Nose
B.
Mouth
C.
Large intestine
D.
Liver
3. 
What is the objetive of absorption?
A.
Is to pass the oxigen into the blood.
B.
Is to carry blood away from your heart.
C.
Is to pass the nutrients into the blood.
4. 
What is the objetive of excretion?
A.
To prepare the undigested food.
B.
To eliminates blood.
C.
To preparate and eliminate the undigested food.
D.
To transport oxigen.
5. 
What organs are involved in the absorption?
A.
Pancreas.
B.
Small intestine.
C.
Liver.
D.
Oesophagus.
6. 
What stage is excretion?
A.
Its the first stage.
B.
Its the second stage.
C.
Its the final stage.
7. 
What is digestion?
A.
Its the vessel wich carry blood away from your heart.
B.
Its the set of changes that happens to the food through the digestive tract.
C.
Its the vessel wich carry blood to your heart.
8. 
What organ is missing to complete the digestion? The mouth, the pharynx, the oesophagus, the intestine and the ...
A.
Liver.
B.
Rectum.
C.
Stomach.
D.
Large intestine.