4. The shading around the molecule represents the relative density of electrons shared by the noms. What does this indicate about the density of electrons around the oxygen atom as compared to
the density of electrons around the hydrogen atoms?

Nephrons, the functional unit of kidneys, are responsible for formation of urine. the sentences describe situations that are the result of problems in the urine formation process. for the nephron shown below, match each situation to the step in the urine formation process where the problem lies.