Homeostasis

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I Y Y S Y H K E E N A A H O A
I N T H E A P E X X M E N H W
X S Y Q D L R Q Y D M R L L J
H H X E I J P Y X O O U B O G
M X H R H A Y D G Y N E D Y S
I P W S P O I O V H I N X H G
E O X Q L C V X C H A H E A D
X P R R A S E T B U D T A U F
A J M C Q H H P J A R E F G K
M P I R R M A F U H J F U I E
T R H B B A L S L E B Y N A H
U T N B W H J I N H M H S G U
C M D B D L P B E R O I H D C
R M Q A C D R Y M L B T R W T
B W R C K N O W M H N S X B B

Clues

  • What is the excretory substance of birds? (4, 4)
  • What is the excretory substance of fish? (7)
  • What is the excretory substance of mammals? (4)
  • When in the loop of henle is the filtrate most concentrated? (2, 3, 4)

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