Across
- 3. obtaining and utilization of food
- 4. Structiral units of lungs
- 5. Memebrane that covers the lungs
- 7. finger like structures in intestine
- 8. Tissue helping in photosynthesis
Down
- 1. Transporter of gases in blood
- 2. Organism which do nit need oxygen
- 4. picking up of digested food by body fluid as blood
- 6. Sheet of muscle where lungs are found resting