Respuesta :
Johnny should not be worried because blood contains buffering agents which resist changes in pH (Option B).
What is blood?
The blood is a fluid inside the circulatory system that contain different type of cells (e.g., red blood cells).
- The blood served to maintain the internal equilibrium (homeostasis) of the body.
- The buffers in the blood include different types of proteins, bicarbonate/carbonic acid, and phosphate acid buffers.
In conclusion, Johnny should not be worried because blood contains buffering agents which resist changes in pH (Option B).
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