Changes in the level of carbon dioxide are detected in the _____ ...

[ereecah]

Changes in the level of carbon dioxide are detected in the _____ of the brain.
 a. hypothalamus
  b. medulla oblongata
  c. cerebrospinal fluid
  d. frontal lobe

Question 2

The lungs regulate _____ levels, while the kidneys regulate _____ levels.
 a. carbon dioxide, bicarbonate
  b. hydrogen ions, carbon dioxide
  c. bicarbonate, hydrogen ions
  d. oxygen, hydrogen ions

[aham8f]

Answer to Question 1

c

Answer to Question 2

a

[ereecah]

TYSM

[DylanD1323]

Great answer, keep it coming