1246 questions and answers in this section
Explain why honey is sweet?

Explain why honey is sweet?

Honey is sweet due to its particular chemical composition which contains a large amount of sugars, mainly glucose and fructose. These two simple sugars are...

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Explain why are tides influenced by the Moon and the Sun?

Explain why are tides influenced by the Moon and the Sun?

The Moon and the Sun exert a gravitational force on the Earth. This attraction is stronger between the Earth and the Moon due to their...

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Explain why dolphins jump out of the water.

Explain why dolphins jump out of the water.

Dolphins jump out of the water to communicate. This behavior can be observed when they are in a group. Jumps, spins, and slaps can be...

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Explain why the color of supernovas varies according to their type?

Explain why the color of supernovas varies according to their type?

There are mainly two types of supernovae: type I and type II supernovae. Type I supernovae are characterized by the absence of hydrogen spectral lines...

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Explain why the extinction of the dinosaurs was caused by the impact of a giant meteorite millions of years ago.

Explain why the extinction of the dinosaurs was caused by the impact of a giant meteorite millions of years ago.

Dinosaurs, gigantic creatures that dominated the Earth for millions of years, underwent a massive extinction about 66 million years ago. This extinction, also known as...

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Explain why plants need light to live?

Explain why plants need light to live?

Photosynthetic pigments are compounds found in plants and other photosynthetic organisms that capture the light energy needed for photosynthesis. The main photosynthetic pigments in plants...

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Explain why some countries change their time according to the seasons.

Explain why some countries change their time according to the seasons.

The purpose of daylight saving time is to allow people to benefit from longer days during the summer period. By moving the clocks forward by...

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Explain why erupting volcanoes sometimes emit lightning.

Explain why erupting volcanoes sometimes emit lightning.

The occurrence of lightning during a volcanic eruption is a fascinating phenomenon but still poorly understood by science. Volcanoes can produce lightning of different colors, ranging from...

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Explain why some planes fly faster than others?

Explain why some planes fly faster than others?

The speed performance of an aircraft largely depends on the power of its engines. The power of an aircraft's engines is essential to provide the...

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Explain why some rocks become fluorescent under a black light.

Explain why some rocks become fluorescent under a black light.

The fluorescence of rocks under blacklight is often related to the chemical composition of the minerals they are made of. Some minerals, such as calcite, fluorite or...

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