Across
- 2. this kind of energy makes us feel warm or hot
- 4. blood vessel that carry oxygen rich blood
- 7. the process by which food and oxygen combine to obtain energy
- 8. plants buried under the soil for years
- 9. organs of respiratory system
Down
- 1. this is more in inhaled air
- 2. pumps blood into the blood vessels
- 3. the pull force between the particles are very weak
- 5. it carry nutrients and water to all parts of body
- 6. wind energy is converted to electrical energy