I hated Hatshepsut. I thought the questions were left field, and while i could answer them just from a wide reading of the subject, i didn't focus on them in my study and so didnt go as well as i hoped. Particularly the eight mark question. I'm also beginning to think my teacher marked me a bit...
Survivor39- you said
"salt ions cannot move across the selectively permeable membrane due to their charges"
I think you may be wrong. What do you think the kidney is!! It's a selectively permeable membrane- hence it selects levels of h20 and salt ions to reabsorb in the accending loop of...