Believe it or not, the sex of baby crocodiles is determined by the temperature of the eggs in the nest. Believe it or not, the sex of baby crocodiles is determined by the temperature of the eggs when they were in the nest -- it's called temperature dependent sex determination. Temperature dependent sex determination or what is also known as TSD is a phenomenon that has been studied in a number of reptilian species.
Getting a license is harder today than it was in the past. General contractors in New York have to deal with some of the toughest construction, plumbing, electrical, and fire codes in the world. NYC contractors have to deal with ordinances and regulations in addition to state laws, so licensing can be especially tough.
When applying for a contractor's license, you may have to: 1  Take a written exam about construction skills and the laws pertaining to construction and business. 2  Prove you have the financial means to operate your own business.3  Provide reference letters from your bank, previous employer and customers, engineers or architects.ach state has over 40 different contractor classifications, so you'll have to decide what kind of contractor you want to be. Classifications include General Engineering Contractor, General Building Contractor and Specialty Contractors. Specialty contractors include: 1  Insulation and acoustical. 2  Electrical.