Why Do We Have Body Hair?
Hair is a thread-like outgrowth arising from the skin of mammals. Collectively hairs are often referred to as fur. Hair consists of dead ce
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Pigments
Why Are Some People Color Blind?
Why Are Some People Color Blind? Scientists think that some people are color blind because they have an abnormality of the three pigments in
Why Is Grass Green?
Why Is Grass Green? The green color in grass-and in most other plants-comes from chloroplast within the cells, each of which contains four d
What Is Paint Made From?
What Is Paint Made From? Ordinary house paint gets its color from colored powders called pigments. Pigments can come from ground-up rocks, o
How Do Green Tomatoes on the Vine Turn Red When Ripe?
How Do Green Tomatoes on the Vine Turn Red When Ripe? When tomatoes are growing on the vine, they’re not bright red like they are when they’