Across
- 4. the mechanism by which organism of tenth oxygen from the air and release carbon
- 5. home, tube
- 6. green pigment present in plants
- 7. the process of releasing energy from food
Down
- 1. respiration take place in the presence of oxygen
- 2. to carry things from one place to another
- 3. Food nourishment
- 4. red coloured liquid which circulates in our body