Because of its chemical composition, H2O. It contains salts and other chemicals as well, but the main composition is water, which is bluyish in dense quantities. Also, earth's atmosphere is made of primarily oxygen and other gases like Nitrogen. Other planets might have red or purple color if their atmospheres are made up of say, methane.
turquoise
teal is a four letter word for a greenish blue color ^_^
greenish blue
a greenish blue color
it is a greenish color.
Turquoise is a greenish-blue color that falls between blue and green on the color spectrum. It is often associated with tropical waters and gemstones.
The colour of the sea is greenish blue because of the reflection of the sky
Yellow and blue can be combined together to make the greenish color. Also, yellow and dark, green can create that "greenish color."
Cyan.
Amber.
greenish blue
Water appears greenish blue because its complimentary color red is absorbed by water molecules