Answer:
C. 30 -40
Explanation:
90% edge
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Answer:
substances can move from areas of low concentration to areas of high concentration
Explanation:
usually substances move across their concentration gradient which is from high concentration to low concentration. Active transport can allow substances to move against their concentration gradient.
Answer: option D - After eating a large batch of salty popcorn, levels of salt in the urine increase
Explanation:
Homeostasis is the ability of a living organism to ADJUST its internal environment to maintain a stable equilibrium
FOR EXAMPLE: warm-blooded animals like humans allow blood vessels dilate during hot weather, and constrict during cold weather IN ORDER to maintain a constant body temperature.
Thus, after eating a large batch of salty popcorn, levels of salt in the urine increase due to the homeostatic mechanism of the ANTI-DIURETIC HORMONE stimulating reabsorbtion of water from urine, and excretion of excess salt.