Gases that contribute to the greenhouse effect include: 1  Water vapor. 2  Carbon dioxide (CO 2). 3  Methane. 4  Nitrous oxide. 5  Chlorofluorocarbons (CFCs).ases that contribute to the greenhouse effect include: 1  Water vapor. 2  Carbon dioxide (CO 2). 3  Methane. 4  Nitrous oxide. 5  Chlorofluorocarbons (CFCs).
Parallel parking. Parallel parking is a method of parking a vehicle parallel to the road (hence the term 'Parallel Parking'), in line with other parked vehicles. Parallel parking usually requires initially driving slightly past the parking space, parallel to the parked vehicle in front of that space, keeping a safe distance, then followed by reversing into that space.
Parallel parking is on every driving exam in every state. That is just the requirements. Usually with parallel parking on the exams, you have cones that you must wedge in between.If you bump the cones or the curb you automatically fail. Its this way in all of the states. The purpose of this test is to help you park efficiently.arallel parking is on every driving exam in every state. That is just the requirements. Usually with parallel parking on the exams, you have cones that you must wedge in between.