Answer:
Active transport.
Explanation:
The kidney uses active transport to move these substances from the nephron to the renal vein because these substances did not moves from the nephron bowl to the renal vein through simple diffusion so for this purpose active transport is used in which energy is spent in order to move the substances from one region to another so we can say that kidney must use active transport to move reabsorbed substances from the nephron to the renal vein.
Vitamins. A lot of coenzymes are derivatives os vitamins especially B vitamins.
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Forward spatter is the blood that is ejected out of the exit wound,going the same direction as the bullet.back spatter is the blood ejected out of the entry wound,travelling against the line of fire and towards the shooter.