A few days ago. i've learned about eclipses.
And it says that the moon blocks the suns light but how isn't the moon bigger then the SuN?

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.