in your nose........
It is made of copper and in the sea air you see the oxidation in it's color of green.
You cannot see even the strongest lasers in the air unless there is something in the air to reflect the light, like fog, smoke, powder, etc.
Actually they are already green due to pollens and polutants in the air, your nose is a natural filter for the air you breath and the mucus membrane that is in your nostrils sucrete mucus and, along with your nose hair trap unwanted material to purify the air you breath. So you see sick or not the color of snot, is what you have seen, the color of green.
you use green gas to fire the air soft gun
Yes, cats can see green lasers because they have a visual system that is sensitive to the color green.
See Wikipedia for "Green economy."
Green
You see green because the chlorophyll absorbs all colors in the spectrum except green so that's why you see green (that's like 5th-7th grade stuff....)
green tree
Green gas is basically propane with silicone oil added to get rid of the odor. Green gas is usually purchased in pre-filled Airsoft Green gas cans. However, to refill the magazine, a standard propane can, such as those used to light campfires, can be attached to the appropriate adapter (see here). ) can be used with
A Granny Smith apple is green. Not just plain green but shades of green.- FunkyAngel111
A penguin's eyes are adapted to see clearly both in air and under water. Penguins have color vision and are sensitive to violet, blue, and green wavelengths of light and possibly to ultraviolet light as well.