Read the Passage carefully
When you look at a rainbow, how do you know that you see what everybody else sees? There are seven colours in a rainbow-red, orange, yellow, green, blue, indigo, voilet- but some people see these colours differently because they are colour-blind.
If someone is colour-blind, it doesn't mean that they can't see colours. It just mean that they can't tell the difference between some colours. Most people who are colour-blind are born that way. Some people may become colour-blind because of an accident or an illness.
Males are more likely than females to be colour-blind. In a group of two hundred girls, it is likely that one or two will be colour-blind, but in a group of two hundred boys, it is likely that about seventeen boys will be.
A lots of animals are colour-blind, too. Cats and dogs can't see reds and greens. Mostly they see things as grey or sometimes as a kind of blue or yellow. They look at the movements and shapes of objects instead of their colours.
Can you see a number or pattern in these dots above?. If you don't see anything in the dots, you might be colour-blind
If someone is colour-blind, it doesn't mean that they can't see colours. It just mean that they can't tell the difference between some colours. Most people who are colour-blind are born that way. Some people may become colour-blind because of an accident or an illness.
Males are more likely than females to be colour-blind. In a group of two hundred girls, it is likely that one or two will be colour-blind, but in a group of two hundred boys, it is likely that about seventeen boys will be.
A lots of animals are colour-blind, too. Cats and dogs can't see reds and greens. Mostly they see things as grey or sometimes as a kind of blue or yellow. They look at the movements and shapes of objects instead of their colours.
Can you see a number or pattern in these dots above?. If you don't see anything in the dots, you might be colour-blind
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