Questions

A gland surrounding the neck of the bladder in male mammals and releasing a fluid component of semen is Prostate gland which is below the bladder and surrounding the urethra.

+1s from your Google+ page show in the count that is visible on your ad.

Stamps are what travel around the worldstaying in one spot. Slippers and walking stick can also travel around the world but they will not stay at one spot. So they are eliminated.

The letter 'X' resembles the same as the tool AXE in sounding.

Hence, the alphabet X is a tool.

The scientific study of rocks is called petrology, which is an essential component of geology.

Energy is measured in units called Joules.

Joule is unit of work or energy in the International System of Units (SI) which is equal to the work done by a force of one newton acting through one metre.

1 Joule  =  10⁷ ergs or 0.7377 foot-pounds.

The Length of the Day is determined in Astronomical Units.

The length of a day corresponds to the time the Earth takes to turn around on its axis, which is approximately 24 hours. But it's not exactly 24 hours. 

This phenomenon is due to tides raised by the Moon which slow Earth's rotation. Because of the way the second is defined, the mean length of a day is now about 86 400.002 seconds, and is increasing by about 1.7 milliseconds per century.

THE QUICK BROWN FOX JUMPS OVER THE LAZY DOG.