1308 questions and answers in this section
Explain why trees in windy regions often have inclined trunks?

Explain why trees in windy regions often have inclined trunks?

When a tree is regularly subjected to strong winds, it endures significant mechanical stress. The trunk is constantly strained, bent, and deformed by gusts, generating...

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Explain why bamboo forests grow so quickly?

Explain why bamboo forests grow so quickly?

Bamboos have a unique genetic heritage that allows them to grow at a record speed. Their genome is equipped with numerous genes responsible for very...

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Explain why we squint in bright sunlight to see better?

Explain why we squint in bright sunlight to see better?

When you squint, it is mainly the muscles around the eyelids that come into play, especially the orbicularis oculi muscle. This circular muscle contracts gently...

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Explain why ice cubes stick together in the freezer?

Explain why ice cubes stick together in the freezer?

Even when they appear perfectly solid, ice cubes can slowly lose some of their ice in the form of vapor, without passing through the liquid...

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Explain why some mirrors produce a distorted image?

Explain why some mirrors produce a distorted image?

The way a mirror distorts an image essentially depends on its shape and its curvature. A normal mirror, the one you use every day, is...

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Explain why the foam in a bath eventually disappears after a while?

Explain why the foam in a bath eventually disappears after a while?

The foam you see in your bath is mainly due to the presence of surfactants, molecules found in soap and shower gels. These somewhat special...

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Explain why do tides occur regularly?

Explain why do tides occur regularly?

Tides occur mainly due to the gravitational force exerted by the Moon, and to a lesser extent by the Sun, on the Earth's oceans. As...

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Explain why are some tropical forests called cloud forests?

Explain why are some tropical forests called "cloud forests"?

Cloud forests are humid tropical forests located at high altitudes on mountains, almost constantly shrouded in thick mist or low clouds. This frequent condensation creates...

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Explain why an ice cube melts more slowly in soda than in water?

Explain why an ice cube melts more slowly in soda than in water?

Water is simply composed of pure water molecules (H₂O), while soda is a much more complex liquid: it mainly contains water, but also sugars, carbon...

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Explain why do some stars emit X-rays?

Explain why do some stars emit X-rays?

Stars emit X-rays when their heated material reaches very high temperatures, typically several million degrees. At these temperatures, electrons are stripped from atoms: the gas...

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