1312 questions and answers in this section
Explain why it is important to respect ocean currents when navigating?

Explain why it is important to respect ocean currents when navigating?

Ocean currents are like large rivers that flow through the oceans. They are caused by several factors such as water temperature, salinity, and the Earth's...

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Explain why compasses do not work at the poles?

Explain why compasses do not work at the poles?

In the polar regions, the magnetic field behaves somewhat differently. Up there, it becomes particularly irregular, with lots of local disturbances. The Earth has a...

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Explain why a frisbee flies by gliding?

Explain why a frisbee flies by gliding?

A frisbee is distinguished by a particular shape: its rounded and slightly raised edge creates a streamlined silhouette. This specific shape acts like a miniature...

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Explain why cacti are able to survive without water.

Explain why cacti are able to survive without water.

The cactus is a true desert sponge. Its fleshy stem has cells capable of storing a huge amount of water thanks to specialized tissues, called...

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Explain why some landscapes appear unreal in photos?

Explain why some landscapes appear unreal in photos?

Our brain constantly tries to organize what it perceives, but sometimes it gets tricked on its own. Thanks to phenomena like forced perspective, a nearby...

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Explain why volcanic islands have unique biodiversity?

Explain why volcanic islands have unique biodiversity?

Volcanic islands are often located far from continents, creating a marked form of isolation. This physical separation makes it difficult for species to exchange with...

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Explain why swimming pools are filled with salt water in some countries?

Explain why swimming pools are filled with salt water in some countries?

Saltwater pools generally require fewer chemicals, especially less artificial chlorine, since their system generates its own chlorine naturally. As a result, there's less need to...

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Explain why can lightning occur during volcanic eruptions?

Explain why can lightning occur during volcanic eruptions?

Volcanic lightning occurs when ash particles, rocks, and crystals expelled during an eruption collide within the volcanic plume. These repeated collisions generate an accumulation of...

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Explain why some languages do not have words for certain concepts.

Explain why some languages do not have words for certain concepts.

What people experience and what they regularly see around them directly influences their way of speaking about the world. For example, some cultures in desert...

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Explain why do some algae produce toxins that are harmful to marine mammals?

Explain why do some algae produce toxins that are harmful to marine mammals?

Producing toxins, for an alga, is primarily a matter of survival and competition. By manufacturing these toxic molecules, certain algae deter predators like small crustaceans...

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