1290 questions and answers in this section
Explain why do storms produce lightning and thunder?

Explain why do storms produce lightning and thunder?

In a cumulonimbus cloud, the rapid movement of air causes intense friction between ice and water particles. These continuous collisions strip and transfer electrons, creating...

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Explain why do corals emit fluorescent light at night?

Explain why do corals emit fluorescent light at night?

Corals often live near the surface, where the sun's ultraviolet rays strike hard. To avoid this damage, they use an original trick: the production of...

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Explain why marine algae produce abundant oxygen under water.

Explain why marine algae produce abundant oxygen under water.

Marine algae use specific pigments that are adapted to capture underwater light. Indeed, underwater, sunlight penetrates more difficultly, and certain wavelengths like red disappear quickly...

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Explain why do oceans absorb a part of atmospheric carbon dioxide?

Explain why do oceans absorb a part of atmospheric carbon dioxide?

When carbon dioxide (CO₂) floats above the ocean, some of the gas naturally dissolves in seawater, like sugar in cold tea. It is a simple...

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Explain why curdled milk has a granular texture.

Explain why curdled milk has a granular texture.

In fresh milk, the main proteins are caseins, initially dispersed in tiny particles called micelles. These small micelles, normally quiet and stable, begin to agitate...

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Explain why frogs croak louder in the rain?

Explain why frogs croak louder in the rain?

Frogs produce their famous croak thanks to a vocal sac, a sort of small pouch under their throat that they inflate like a balloon. When...

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Explain why ozone is so important in the ozone layer.

Explain why ozone is so important in the ozone layer.

Ozone is a molecule composed of three oxygen atoms, represented by the formula O₃. It primarily forms thanks to the energy provided by the sun's...

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Explain why the Mayan calendar was so precise despite the absence of modern technology.

Explain why the Mayan calendar was so precise despite the absence of modern technology.

The Mayans observed for years the movements of the Sun, the Moon, Venus, and other celestial bodies with the naked eye, but with astonishing precision. Through patience,...

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Explain why rainbows are always curved?

Explain why rainbows are always curved?

When sunlight enters a droplet of water, its path changes slightly: this is called refraction. In the process, white light splits into several distinct colors...

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Explain why have carnivorous plants evolved to capture live prey?

Explain why have carnivorous plants evolved to capture live prey?

Carnivorous plants have adapted due to a very particular environment: soils low in certain essential nutrients, especially nitrogen and phosphorus. As they could not find...

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