Textbook Questions
| 1. |
Respiration in insects
Difficulty: easy |
1
|
| 2. |
Respiration in frogs
Difficulty: medium |
2
|
| 3. |
Respiration in fish
Difficulty: medium |
2
|
| 4. |
Activity - Co2 is released during exhalation
Difficulty: hard |
4
|