| Front | Why is the breathing system needed in mammals? |
|---|---|
| Back | The breathing system is needed to take air into and out of the lungs, so that oxygen and carbon dioxide can be exchanged between the body and the environment. |
Learn with these flashcards. Click next, previous, or up to navigate to more flashcards for this subject.
Next card: Define tissue group similar cells work carry function
Previous card: Form specialised cells organised tissues organs systems
Up to card list: GCSE Biology Paper 1 (9-1 Exams)