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6. what does your lungs have to make them more efficient
- alveoli
- lots of white blood cells
- Santa
7. 1 way in which (question 6) is adapted to increase efficiency of breathing is...
- bells on the end of their hats
- a small surface area
- a moist surface
- a large amount of antibodies
8. for food to be exchanged in the gut it must be in what form
- soluble ones
- insoluble ones
- edible
9. what do you have inside your small intestines to increase exchange?
10. the thing mentioned above is adapted in one of the following ways
- small surface area
- they own a time travel machine
- lots of mitochondria close by
- thick walls
11. having a large surface area is good for exchange
12. why do areas involved in exchange usuallly have a rich blood supply
- no one knows
- the concentration gradient is kept high
- it means the heart is close by
13. what is transpiration
- inspired trains
- the movement of water through the plant
- plants sweating