Across
- 3. what organ releases oxygen to the blood?
- 6. reaction which type of reaction is does respiration undergo?
- 7. what is the taking in of oxygen and giving out of carbon dioxide called?
- 8. where does respiration take place in a cell?
- 10. what gas is needed during respiration?
Down
- 1. system what system involves metabolic reaction
- 2. what is another name for trachea?
- 4. respiration what type of respiration involves the presence of oxygen?
- 5. sacs what is another name of alveoli ?
- 9. dioxide what is the type of air that is given out during respiration?