### fire hazard:

Pure oxygen
* can also relieve fatigue, headaches, and boost energy.
* fire hazard.
* generates larger, more intense flames.
* is used in submarines and diving bells
  - to pressurize the chamber
* promotes combustion, and high-pressure oxygen greatly enhances combustion.
* speeds up burning.
* supports rapid combustion of any burnable material.

### fire hazards:

Open flame
* are fire hazards.
* can be a fire hazard and overheating a single spot can burst the pipe
  - create the risk of fire, including smoldering fires, and burns

Firework
* Many fireworks have an explosive stage, and have the force necessary to completely sever fingers.
* Most fireworks burn injuries involve children.
* Some fireworks leave sharp objects behind after they have been ignited which can damage car tires.
* are a major fire hazard
  - and have been known to be a danger to the birds
  - capable of booms
  - dangerous because they contain gunpowder
  - explosive devices and are dangerous
* are explosives, and when they are abused, they cause tragic damage and even loss of life
  - but they are also, in the main, consumer products
  - illegal in many states and strictly regulated in others
  - illegal, including firecrackers
* are more hazardous when confined
  - , especially in a glass or metal container
  - one of the leading causes of eye injuries
  - the simplest of solid rockets and the weakest
* are very dangerous, particularly for young children
  - unstable, and large numbers of people are hurt from fireworks every year
* burn at very high temperatures.
* burst in magical shapes and colors.
* can be dangerous and have caused serious injury and death
  - very hot after they burn
* can cause fires and injuries to people
  - injuries other than burns by exploding and affecting the hands, body, or eyes
  - serious injuries, including the loss of fingers, hands, and vision
  - start a fire just by rubbing against something else
* constitute a fire hazard.
* explode and give their bright colours due to very fast chemical reactions
  - at dusk
* low explosive
* produce light, noise and air pollution.
* remain serious health hazard and cause of blindness.
+ Fireworks display: Pyrotechnics
  * Fireworks redirects here.
  * Some fireworks are ground-based, and others are shot into the air. Because they explode and can cause fires or burns, most countries have laws that only allow trained professionals to use display fireworks. Smaller, less explosive fireworks are available to regular, everyday people, but they are still dangerous and cause injuries each year.

### firework:

Firecracker
* are an essential part of Lunar New Year in both Chinese and Vietnamese traditions
  - so dangerous that they are illegal in many places
* go off in a flash, then leave nothing but ashes.
* have a subversive appeal.

### firm fruit:

Green papaya
* contain papain which helps the digestion process.
* firm fruit.
* is good for making salad
  - used for stir fries and curries in many Asian dishes

### firm tissue:

Healthy tissue
* Some healthy tissue surrounds flesh.
* is firm tissue.

### first-degree misdemeanor:

Vehicular homicide
* first-degree misdemeanor.
* misdemeanor that carries a maximum possible jail sentence of six months.

### first-degree radiation burn:

Mild sunburn
* causes the skin to turn red, but the redness disappears in a few hours or days.
* first-degree radiation burn.
* is an example of a first-degree burn.