What are two reasons fireflies light up at night?

Fireflies glow to avoid?

Fireflies glow for two reasons. One reason they glow is to avoid predators. Another reason they glow is to attract a mate.

Is fireflies light is bright?

The light produced by fireflies is bright enough that you can see them from at least a hundred if not more than two hundred feet away. However, they don't make enough light to brighten a room or come close to comparing with a light bulb. Also, they can only make short spurts of light at a time.

How animals ableto produce light on their own?

Animals such as fireflies contain two chemicals, luciferin and luficerase. When combined with oxygen, they give off light.

Are there more than one species of fireflies in Illinois?

There are more than one species of fireflies in Illinois. The two kinds of fireflies to be seen there are in the genus Pyractomena and Plotinus.

Why do fireflies glow at night?

Fireflies or lightning bugs use specific flash patterns to signal potential mates. Their glow also lets predators know that they taste bad.They have a bulb that glows. The male firefly has only one bulb whereas the female firefly has two bulbs which allows it to glow brighter than its male counterpart.

What do fire flies body's look like?

fireflies have two big eye balls with multiple flat surfaces on it. they also have two antennas, brown soft smooth skin and bodies.

Are chasing fireflies and catching fireflies two different companies or the same company?

Yes they are two different companies. catching fireflies is a whimsical gift gallery based in Michigan with 2 brick-n-mortar stores & an online shopping site. chasing fireflies is a child focused gift & clothing catalog/website company based in Washington.

Why does your battery dies over night on your 1993 Nissan altima?

This is caused by one of two reasons. Either the battery has a dead cell and needs replacing or there is a parasitic drain on the battery. The drain can be any light that is constantly on or a relay that is stuck.

Who are you I am one every night without a light but make two during the day?

You are a shadow. Shadows are formed when an object blocks light, creating a silhouette during the day, while disappearing when there is no light at night.

The different species of fireflies?

PhoturinaeIf you live in North America, these are the fireflies you're probably most familiar with. Not all fireflies in this subfamily light up, but those that do are generally divided into three closely related species. Photinus fireflies tend to be the most common of this group; about half an inch long, these produce yellow-green light.Photuris fireflies are larger-almost an inch long-and produce a darker green light. They're very difficult to distinguish from Photinus from their light alone, even for other fireflies; female Photuris often mimic mating flashes from female Photinus fireflies to attract and eat Photinus males. Because of this, Photuris species are sometimes called "femme fatale" fireflies.Pyractomena fireflies produce a yellow-amber flicker that looks a bit like a spark from a campfire.LUCIOLINAELuciolinaeThis is the largest subfamily of fireflies, with member species scattered throughout Eurasia, Europe, East Asia, and Australia. The fireflies within this subfamily all produce light-and flash rather than emit a continuous glow. Here are a few genera of note within this group. Peroptyx. Species within this group are mainly found in tropical Asia. Groups of fireflies will synchronize their flashes until thousands are all flashing to the same rhythm, producing a stunning display.Luciola. These fireflies are sometimes known as "Japanese fireflies," although they're also found in Asia and more rarely in southern Europe and Africa. In Japanese traditional culture, they are believed to represent the souls of the dead.CYPHONOCERINAECyphonocerinaeThis subfamily of fireflies includes two genera that live in North America and Eurasia. They're notable because scientists believe they are the most primitive species of fireflies in existence. One genus within this group displays very weak light, while the other does not light up at all. LAMPYRINAELampyrinaeSometimes referred to by taxonomists as a "catch-all" subfamily classifying fireflies that don't quite fit into other groups, the species in this subfamily live generally in more temperate northern regions of the world, although a few species are tropical. The group contains both flashing and continuous-glow fireflies. Some larvae species within this group climb trees to feed on snails and bugs. Lampyris is a genus of firefly within this subfamily found primarily in Britain, and they thrive in old-growth grasslands in soil with high concentrations of limestone and chalk. Only the males fly; the females are larviform, and only they glow. Females crawl onto blades of grass and low vegetation at dusk and emit a yellow-green continuous light to attract mates. Their vernacular name is "glow worm."Phausis reticulata also known as blue ghost fireflies. These tiny fireflies are common throughout the southeastern US and are known as the "blue ghost" because they do not flash but glow with an eerie blue or green light. Females of the blue ghost are pale yellow or white in color and lack wings (right in photo below). Males do have wings and can fly (left in photo below). Since they have not be studied extensively little is still known about them and their habits.OTETRINAEOtetrinaeScientists haven't decided whether this group should be classified as fireflies; while they share many characteristics of other species, members of the group Otetrinae don't emit light. They're considered very primitive forms of fireflies, and live primarily in Eurasia and North America.

Why is it dark at nigth?

I can think of two powerful reasons: -- Because "night" (notice the spelling) is the name we give to the part of the daily cycle when it's dark. If it were not dark, then it would not be night. -- Because at night, the biggest, brightest, cheapest, most dependable source of light, and the one that's easiest and most convenient for us to use most of the time, is gone. That's the sun.

What are two examples of illuminated and luminous objects?

Luminous objects are things that generate their own light such as The Sun and Fireflies. Illuminated objects are things that reflect light that has come from another source, things like The Moon or anything in your room when you switch on your light.