1308 questions and answers in this section
Explain why some countries change time zones?

Explain why some countries change time zones?

When a country changes its time zone, it is often related to its geographical position. Sometimes, a territory finds itself right between two time zones. It then...

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Explain why mosquitoes are attracted to ultraviolet light.

Explain why mosquitoes are attracted to ultraviolet light.

Mosquitoes have compound eyes made up of numerous facets called ommatidia. Thanks to these many small eyes, they easily detect even slight movements and quickly...

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Explain why some plants have a deep root system?

Explain why some plants have a deep root system?

In the face of water scarcity, some plants develop particularly deep roots to search for moisture below the surface. This strategy simply allows them to...

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Explain why some species of fish migrate to warmer waters in winter.

Explain why some species of fish migrate to warmer waters in winter.

In winter, cold water reduces the amount of food available, prompting some fish to seek more hospitable habitats. Less sunlight and shorter days lead to...

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Explain why do flames dance on a candle?

Explain why do flames dance on a candle?

A flame is a hot mixture of burning gases, primarily composed of wax vapor, oxygen, and various products resulting from their combustion, such as carbon...

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Explain why is sea water dense?

Explain why is sea water dense?

Seawater is primarily composed of pure water (of course), but with a good dose of dissolved mineral salts that give it its well-known salty taste. The main...

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Explain why do our fingers leave marks on touchscreen devices?

Explain why do our fingers leave marks on touchscreen devices?

Our fingerprints are those small ridges and valleys that form unique patterns at the tips of our fingers. They appear as early as the formation...

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Explain why Antarctica is the coldest continent on the planet.

Explain why Antarctica is the coldest continent on the planet.

Antarctica is located at the southernmost part of our planet, right around the South Pole. This extreme position places it far from other continents, completely...

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Explain why indoor plants improve air quality.

Explain why indoor plants improve air quality.

Plants function as natural air filters through a phenomenon called photosynthesis. During the day, they absorb carbon dioxide (CO2) present in the air and release...

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Explain why our printers use different colors to produce color images?

Explain why our printers use different colors to produce color images?

When you print a color image, your printer doesn’t just lay down each color separately next to the others. It layers them in fine sheets...

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