1290 questions and answers in this section
Explain why do cut vegetables turn brown when exposed to air?

Explain why do cut vegetables turn brown when exposed to air?

The main culprit behind the browning of cut vegetables is a specific type of enzyme, called polyphenol oxidase (or PPO for short). Once the vegetable...

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Explain why marine sponges can filter water so effectively?

Explain why marine sponges can filter water so effectively?

Sea sponges have a very unique internal organization with numerous tiny pores called ostia, spread across their entire surface. These pores create a natural sieve, allowing water...

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Explain why clouds remain suspended in the air?

Explain why clouds remain suspended in the air?

Clouds are primarily made up of tiny water droplets or fine ice crystals. These microscopic particles come from the condensation of water vapor present in...

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Explain why the sound of waves breaking on the beach is soothing for many people.

Explain why the sound of waves breaking on the beach is soothing for many people.

The soothing sound of waves primarily comes from the successive bursts of small air bubbles trapped in the water when a wave breaks. Each burst...

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Explain why garlic leaves a lingering smell on hands?

Explain why garlic leaves a lingering smell on hands?

When you crush or cut a clove of garlic, you break its plant cells and release an enzyme called alliinase. This enzyme reacts with a...

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Explain why baking soda can help extinguish a kitchen fire?

Explain why baking soda can help extinguish a kitchen fire?

Baking soda, chemically known as sodium bicarbonate, is a naturally alkaline white powder, meaning it easily neutralizes acids. When heated, it rapidly decomposes, releasing carbon...

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Explain why the Mayans built pyramids astronomically aligned with the stars.

Explain why the Mayans built pyramids astronomically aligned with the stars.

For the Maya, the universe was a vast web connecting humans, gods, and celestial bodies. They believed that the sky reflected the earthly world and...

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Explain why the Taj Mahal changes color throughout the day?

Explain why the Taj Mahal changes color throughout the day?

The white marble used to build the Taj Mahal mainly comes from the Makrana region in Rajasthan. And its uniqueness? It has a brilliant whiteness...

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Explain why storms at sea can be particularly dangerous for navigation.

Explain why storms at sea can be particularly dangerous for navigation.

Storms often generate intense electric and magnetic fields capable of disrupting the boat's electronic devices. The GPS, radar screens, or radio communications can start to...

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Explain why seals can dive so deeply underwater?

Explain why seals can dive so deeply underwater?

Seals have a streamlined body that is highly hydrodynamic, ideal for minimizing resistance in water and conserving their energy. Their limbs are transformed into powerful...

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