The fourth season of the Naruto anime series, titled ''4th Stage'' in Japan, is directed by Hayato Date, and produced by Studio Pierrot and TV Tokyo. Based on Masashi Kishimoto's manga series, the season follows Naruto and his friends assigning on different short missions, after Sasuke Uchiha joins up with Orochimaru.
will there be a season 4 of naruto?
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Answer: yes

Hydronephrosis--literally ''water inside the kidney''--refers to distension and dilation of the renal pelvis and calyces, usually caused by urinary retention due to obstruction of the free flow of urine from the kidney. Untreated, it leads to progressive atrophy of the kidney. One or both kidneys may be affected. In cases of hydroureteronephrosis, there is distention of both the ureter and the renal pelvis and calices.
hydonephrosis is caused by decreased blood flow to the kidney?
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Answer: yes

In the physical sciences, an ion (/an, -n/) is a particle that has a non-zero net electrical charge, such as an atom or molecule whose total number of electrons is not equal to its total number of protons. A cation is a positively-charged ion, while an anion is negatively charged. Because of their opposite electric charges, cations and anions attract each other and readily form ionic compounds, such as salts.
an anion is any atom or group of atoms with a positive charge?
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Answer:
no