It is possible that the weigela and forsythia have frozen if they were exposed to extremely low temperatures. Both of these plants are susceptible to frost damage, especially if they have not been properly protected during cold weather. Signs of freezing may include wilting, browning of leaves, and damage to the stems. It is important to monitor the plants closely and provide appropriate care to help them recover from any potential freezing. **

Copper in the soil can be toxic to plants, including forsythia. To save your forsythia, you can try to reduce the amount of copper in the soil by adding organic matter such as compost or peat moss to help bind the copper and make it less available to the plant. You can also try planting the forsythia in a raised bed with fresh soil to avoid the copper-contaminated soil. Additionally, you can consider using chelated iron supplements to help counteract the effects of copper toxicity on the forsythia. **

A paragliding tandem pilot is an experienced and certified individual who is responsible for flying a tandem paraglider with a passenger. They are trained to safely navigate the paraglider through the air, control its speed and direction, and ensure a smooth and enjoyable flight for the passenger. Tandem pilots must have a deep understanding of paragliding techniques, weather conditions, and safety protocols to provide a memorable and secure experience for their passengers. **

No, paragliding does not work solely through wind energy. While wind plays a crucial role in paragliding by providing lift and allowing the glider to stay airborne, the sport also relies on the pilot's skill in controlling the glider and using thermals (rising columns of warm air) to gain altitude. Additionally, the pilot can use the glider's speed and the shape of the terrain to maintain flight, meaning that paragliding is not solely dependent on wind energy. **

The legality of a flight altitude depends on various factors such as air traffic control regulations, airspace restrictions, and the specific flight plan. Pilots must adhere to the altitude restrictions set by air traffic control and comply with any airspace regulations in the area they are flying. Additionally, the aircraft's performance capabilities and the weather conditions also play a role in determining the legal flight altitude. Therefore, without specific details about the flight and the regulations in place, it is not possible to determine the legality of the flight altitude. **

The flight altitude of fighter jets can vary depending on the specific model and mission requirements. However, in general, fighter jets are capable of flying at altitudes ranging from 30,000 to 60,000 feet. This high altitude capability allows fighter jets to operate above most commercial air traffic and provides them with a tactical advantage in combat situations. Additionally, flying at higher altitudes can also increase the range and speed of fighter jets. **

The maximum flight altitude is calculated based on various factors such as the aircraft's performance capabilities, weight, temperature, and air pressure. Pilots use performance charts provided by the aircraft manufacturer to determine the maximum altitude the aircraft can safely and efficiently operate at. These charts take into account the aircraft's engine power, aerodynamic characteristics, and other variables to calculate the maximum altitude. Additionally, regulations and airspace restrictions may also dictate the maximum flight altitude for a particular route or airspace. **

The altitude of a pilot at 160 meters would be 160 meters above a specific reference point, such as sea level or ground level. Altitude is a measure of the vertical distance between an object and a reference point, so in this case, the pilot would be 160 meters above that reference point. This altitude measurement is important for pilots to maintain safe distances from the ground and other aircraft while flying. **