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 generally used next to a curb in the space between two parked cars. Find a place which is at least 5 feet longer than your car. It requires practice to master this maneuver, but sometimes it is your only choice. Be attentive to the place where you leave your car. There are a lot of restrictions about parking, and you have to keep in mind the pavement marking rules and your state's traffic laws and know what circumstances won't allow you to park in some areas. 1  Angle Parking.