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are these two the same point?
- Diffusing molecules change direction every time they collide and if the diffusion pathway is too long the molecules change direction too often for gas exchange to happen efficiently enough for survival.
-Larger organisms have a lower surface area to volume ratio so diffusion across their surfaces is not efficient enough for gas exchange.
if they're not the same statement then I don't really get what the second point is saying?
- Diffusing molecules change direction every time they collide and if the diffusion pathway is too long the molecules change direction too often for gas exchange to happen efficiently enough for survival.
-Larger organisms have a lower surface area to volume ratio so diffusion across their surfaces is not efficient enough for gas exchange.
if they're not the same statement then I don't really get what the second point is saying?
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Sorry you've not had any responses about this. 
Are you sure you've posted in the right place? 
Here's a link to our subject forum which should help get you more responses if you post there. 
Just quoting in Fox Corner so she can move the thread if needed
Are you sure you've posted in the right place? 
Here's a link to our subject forum which should help get you more responses if you post there. 
Just quoting in Fox Corner so she can move the thread if needed
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