1 kilometer = 6.68 × 
(<<<AU is in scientific notation here)
To convert 300 billion kilometer (3,000,000,000 km) into AU you must multiply the kilometer by the equivalent of 1 km in AU (6.68 × )
3,000,000,000 × (6.68 × ) = 20.04 AU
Hope this helped!
Recombination occurs when two molecus of dna exchange pieces of their genetic material with each other .
Step by step
The glomerulus is supplied blood by the afferent arteriole, then the efferent arteriole takes away blood from the glomerulus.
The afferent arteriole has a larger diameter than the efferent arteriole.
The efferent arteriole, due to its smaller diameter creates some resistance to blood flow causing a blood back-up which creates a high pressure in the glomerular cavity. Therefore fluid and solute are forced out from the blood and into the glomerular capsule. Most of this filtrate is returned to the blood via peritubular capillary bed surrounding the nephron.
