How Is Coal Formed?
How Is Coal Formed? Coal comes from plants that have been buried in the earth so long, they turned hard and black. Millions of years ago, much of the earth was swampy...
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Why Does an Opossum Hang by Its Tail?
Why Does an Opossum Hang by Its Tail? An opossum is a furry animal that looks something like an overgrown rat. It has a long tail without much hair on it. The opossum...
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How Does Coral Grow?
How Does Coral Grow? Beneath the surface of the sea lie coral formations of many shapes and colors. The formations may look like branching trees tinted green or...
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Why Do Leaves Turn Brown in the Fall?
Why Do Leaves Turn Brown in the Fall? The leaves of trees turn brown in autumn when they lose a green substance called chlorophyll. All spring and summer the leaves on...
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Why Do Leaves Turn Colors in the Fall?
Why Do Leaves Turn Colors in the Fall? The green we see in leaves all summer comes from the green pigment “chlorophyll,” which leaves use in making food. Other colors...
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