Knowledge about air duct cleaning is in its early stages, so a blanket recommendation cannot be offered as to whether you should have your air ducts in your home cleaned. The U.S. Environmental Protection Agency (EPA) urges you to read this document in it entirety as it provides important information on the subject.
Historically, IQ is a score obtained by dividing a personâs mental age score, obtained by administering an intelligence test, by the personâs chronological age, both expressed in terms of years and months. The resulting fraction is multiplied by 100 to obtain the IQ score.
IQ tests were meant to find out what the most suitable way to teach someone might be. Someone with an IQ of 75 probably needs extra help, while someone with an IQ of 125 probably needs more challenging work. SO, IQ doesn't tell you how smart you are, just how you compare to other people at different ages. Intelligence is a quality, not a quantity.