How Can Cactus Plants Live in the Desert?
How Can Cactus Plants Live in the Desert? Cactus plants have many adaptations that allow them to live in dry areas; these adaptations let the plant collect water...
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What Is Hail?
Hail is made up of small lumps of ice that sometimes fall during thunderstorms. Hail starts in thunderclouds as rain. As the raindrops form, strong air currents carry...
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Does Quicksand Suck Things Down?
Does Quicksand Suck Things Down? No – quicksand does not actually suck anything down. In fact, quicksand is rarely more than a few feet deep; you can float in...
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Why Do We Have Hair?
The main purpose of hair is to protect the body. Hair keeps the top of the head warm in winter, and shields it from bumps and bruises. The hair in our nose and ears...
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Why Do Hermit Crabs Live in Discarded Shells?
Why Do Hermit Crabs Live in Discarded Shells? Unlike other crabs, the hermit crab has no hard outer shell to protect its soft body. So it “borrows” the shells of other...
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Why Do We Have Tonsils?
Why Do We Have Tonsils? Tonsils are lymphatic tissues on either side of the back of the human throat that help fight infections. The purpose of these lymphatic tissues...
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What Makes a Boomerang Fly?
What Makes a Boomerang Fly? Boomerangs used most famously by the Australian Aborigines use a very complex combination of physics and aerodynamics to perform their...
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What Is the Difference Between Fruits and Vegetables?
Although it is difficult to say exactly what the difference is between fruits and vegetables, the popular distinction is that fruit, in general, is the fleshy part of...
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What Were the Dark Ages?
The “Dark Ages” is a term once used to describe the period between the 5th and 11th centuries in western Europe. “Dark” refers to the supposed lack of learning and to...
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How Did Death Valley Get Its Name?
How Did Death Valley Get Its Name? Death Valley was given its grim name by early travelers, many of whom died of heat and thirst while struggling to cross this hot, dry...
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