Colour in nature: true blue
Have you ever seen a blue cow? A blue apple? Or a blue tree? Blue is rare in nature, so why are some plants and animals blue?
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Have you ever seen a blue cow? A blue apple? Or a blue tree? Blue is rare in nature, so why are some plants and animals blue?
Have you ever seen a blue cow? A blue apple? Or a blue tree? Blue is rare in nature, so why are some plants and animals blue?
Colour in nature: true blue
Colour in nature: true blue