Roaches are one-they can't see light in the red spectrum which is why those roach baits usually have red see-through covers- so when you check them with a flashlight, they can't see you.
red is a primary colour, so you cannot mix colours to get red.
Red is a base colour. You cannot mix it from other colours.
Blue is a color that cannot be made with red or any other assortment of colors.
You cannot make the colour red by mixing other colours, it is a primary colour so it is used to create other secondary colours
You cannot mix anything to get red. Red is what is known as a 'primary' colour and cannot be made by mixing others. Another primary colour is blue. You cannot mix anything to get red except for using magenta and yellow -although this produces more of an orange/brown.
RED!
Insect blood is generally either totally colourless or a very faint yellow or green colour.
Red is a primary colour, which cannot be reproduced by man. Particles for primary colours (blue, yellow, and red) are extracted from specific rock.
Because red is the first colour to be camoflauged in the dark, therefore predators cannot see them as well.
Red is the colour for communism.
Blue is a primary colour, you cannot recreate a primary colour, you have to buy them from stores. These colours include; Red, blue, and yellow (are the three primary colours); you also cannot recreate white.
The only mammals that can tell the difference between red and green are primates.