No, fire-breathing dragons would not be biologically possible. The ability to breathe fire would require a biological mechanism to produce and expel a flammable substance, as well as a way to ignite it. There are no known biological systems that could accomplish this, and the energy required to produce and expel fire would be impractical for a living organism. Additionally, the heat and pressure from breathing fire would likely be harmful to the dragon's own body. Therefore, fire-breathing dragons are purely a product of mythology and fiction. **

It is allowed to bring matches on a plane because they are considered a small personal item that is not inherently dangerous on its own. However, starting a fire on a plane is strictly prohibited due to the potential risks it poses to the safety of passengers and the aircraft. The controlled use of matches for personal reasons is permitted, but any unauthorized ignition of flames is a serious safety concern that could lead to a catastrophic incident. **

You are allowed to bring matches on a plane because they are considered a small personal item and are not typically considered a security threat. However, making a fire on a plane is strictly prohibited due to the potential risk of causing a fire hazard and endangering the safety of the passengers and crew. The use of matches or any other flammable materials in an enclosed aircraft environment poses a significant risk and is therefore not permitted. **

To reflect a plane on the plane x1x3, you would first find the equation of the plane you want to reflect. Then, you would substitute x2 with -x2 in the equation to reflect it across the x1x3 plane. This means changing the sign of the coefficient of x2 in the equation of the plane. The resulting equation will be the reflection of the original plane across the x1x3 plane. **

To reflect a plane across the plane x1x3, you can first find the equation of the mirror plane x1x3. Then, for each point on the original plane, you can find its reflection across the mirror plane by using the formula for reflecting a point across a plane. This involves finding the perpendicular distance from the point to the mirror plane and then using that distance to find the reflected point. By applying this process to all points on the original plane, you can obtain the reflected plane across the x1x3 plane. **

Some fantasy games that include mythical creatures are World of Warcraft, which features creatures like dragons, elves, and orcs; The Elder Scrolls V: Skyrim, which includes creatures like giants, werewolves, and dragons; and Final Fantasy series, which features a wide variety of mythical creatures such as chocobos, moogles, and various summoned monsters. These games incorporate mythical creatures to create immersive and fantastical worlds for players to explore and interact with. **

To determine a parallel plane to a given plane, you can use the normal vector of the given plane. If the normal vector of the given plane is (a, b, c), then the parallel plane will have the same normal vector. You can then use this normal vector to find the equation of the parallel plane. If the given plane has the equation Ax + By + Cz + D = 0, then the parallel plane will have the equation Ax + By + Cz + K = 0, where K is a constant. This will ensure that the two planes are parallel to each other. **

No, survivors of a plane crash were not run over by the fire department. In fact, the fire department is typically one of the first responders to a plane crash and their primary goal is to rescue survivors and provide medical assistance. They are trained to assess the situation and provide aid to those in need, not to cause further harm. It is important for emergency responders to act quickly and efficiently in order to save lives in the aftermath of a plane crash. **