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Activity 1.2
Study the diagram. Describe the role of the digestive, respiratory and circulatory system by answering the questions below.

1. Where does the final digestion of food take place?
2. When it is converted into energy and nutrients, how does it reach the different parts of the body?
3. How does oxygen get into our body?
4. How does oxygen reach the different parts of our body? Which blood component particularly carries it?
5. How do we release carbon dioxide?

pa help po. ​

Sagot :

1. The small intestine

2. The bloodstream

3. Oxygen moves across paper-thin walls to tiny blood vessels called capillaries and into your blood.

4. Oxygen binds to hemoglobin

5. When hydrocarbon fuels (i.e. wood, coal, natural gas, gasoline, and oil) are burned

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