Select your answer:

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Urinary System › ViewThe descending limb of the loop of Henle
A. is permeable to salt and urea.
B. is not permeable to water.
C. responds to high levels of antidiuretic hormone (ADH) in the blood.
D. loses water to the peritubular capillaries as the filtrate becomes more concentrated.
Nature of Science › View
Say you are a sorcerer who wants to find out if a magic potion makes you stronger. Your hypothesis is, “if one eats the magic potion, then they will be stronger.” What is the independent variable?
A. the magic potion
B. strength
C. a wizard’s hat
D. magic mandrake root