RESUMEN, POWERPOINT Y TEST DEL TEMA 3 DE CIENCIAS NATURALES "NUTRITION".

SUMMARY.

What we need to live:

We need air, water and food to live.

Respiration:

When we breathe, we absorb oxygen.

Breathe in.

Breathe out.

When you breathe in, you fill your lungs.
When you breathe out, you empty your lungs.

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Digestion:

1. Food goes into the mouth and we chew the food with the teeth.



                    

2.  The tongue mixes the food with saliva and the food goes down the oesophagus. Then the food goes  into the stomach.

3. The food we don't need is expelled out of the body in the faeces.

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Healthy diet:

To have a healthy diet we need to eat all types of food:

1. Fruits and vegetables.
2. Pulses and cereals.
3. Dairy products.
4. Fish and meat.
5. Sweets.

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