They are not necessarily black or red; some are both and some are neither; many are brown, some of them very light brown and some quite dark brown. Some, especially those living in the dark, are a pale yellow colour.
As for why they are commonly black or red, the black colour may be useful for absorbing warmth or protecting the animal from ultraviolet. However, especially large species, conspicuously coloured in red or black or both, and with typical conspicuous ant-like behaviour, would be likely to scare off creatures that might otherwise attack them. It would be a warning that these creatures are ants, likely to bite or sting or have a sharp smell, and to attack in their thousands, so that they would be best left alone.
Not all ants are red. There are other colours too, like black ants.
Some of them
the red ant. they can kill another ant in 10 seconds.
The red ant.
The black ant is
No. They dont cross breed.
Red harvester ant was created in 1858.
Red imported fire ant was created in 1972.
an ant is yellow with green and red stripes
Its possible especially if a red ant..
Red ant in Japanese is 'akai ari' (赤いアリ). Akai (赤い) - red Ari (アリ) - ant
red
Binomial name for red ant is Oecophylla longinoda and Oecophylla smaragdina.
It is believed that most ants are red to warn other animals of their poison and presence. The red color stands out and makes it easy to tell that the ant is dangerous. This protects the ant from predators.