The function of ball bearings in a wheel is:
The vacancy of the office of the President must be filled within:
Which one of the following is not a sect of Buddhism?
The total population divided by available arable land area is referred to as:
The Malthusian theory is associated with which of the following?
Which of the following is NOT related to the World Trade Organization (WTO)?
Which among the following standard protocols is the most widely used by the Internet?