A Concentration Gradient Is Exhibited (When): Check All That Apply

A concentration gradient is exhibited (when) : Check all that apply.

A) the room temperature is 34 degree Celsius and the outside air is 34 degrees Celsius
B) intracellular fluid has 5% solute and extracellular fluid has 0.8% solute concentration
C) during rest, muscle and liver cells contain high glycogen concentration and blood contains lower concentrations
D) the pCO₂ changes from 45 to 35 mmHg in the alveoli of lungs