Why danger lights in vehicles are red in colour?

Why is the urine yellow in colour?

Why are traffic signals red in colour?

Why are traffic signals red in colour?

The wheels of vehicles are provided with mudguards. Why?

How does snow appear to be red in colour ?

Why are traffic signals red in colourn ?

Assertion: Red colour of rhodophyta is due to abundant formation of r-phycoerythrin. Reason: r-Phycoerythrin is able to absorb blue green wavelength of light and reflect red colour.