The answer is epididymis.
Testicles contain seminiferous tubules, in which sperm is produced, and an epididymis, in which sperm matures. Mature sperm passes through the epididymis to the vas deferens. There, it combines with a liquid secretion from the seminal vesicles and continues through the prostate gland to the urethra. Sperm containing fluid is called semen and it is ejected through the urethra.
Clear or a Lighter yellow...Bright yellow type Urine may be a sign of STD or an Infection
Answer: Permeability.
This property allows liquids to pass through the material but also filters out pieces of garbage and other pollutants. In aquifers, permeable rocks or synthesized permeable material are used so that trash, or clay will not leak into the groundwater.
The answer is impermeability. The protective materials prevent the leakage and seepage of contaminated water (such as those of battery acid and household cleaners), by gravity, to the water table in the aquifer. If this is not done, contamination of groundwater may result and cause a public health disaster when the contaminated water is used for consumption when it reaches water wells.