1273 questions and answers in this section
Explain why cacti are able to survive without water.

Explain why cacti are able to survive without water.

Cacti are able to survive without water for long periods of time thanks to their impressive water storage capacity. Their plant tissue is specially designed...

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Explain why some landscapes appear unreal in photos?

Explain why some landscapes appear unreal in photos?

Optical effects and perspectives play a major role in how a landscape is perceived in a photo. These phenomena can create the illusion of an...

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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 continental masses, rendering them naturally isolated. Geographic isolation means few exchanges with species from other places. Local species...

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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?

The use of saltwater in pools offers the possibility of significantly reducing maintenance costs. Indeed, salt acts as a natural disinfectant, eliminating the 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 during volcanic eruptions. When ash particles, gas, and molten rocks move within the ash clouds emitted by a volcano, friction occurs. This...

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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.

In many languages, the linguistic structure can limit the ability to express certain complex concepts. For example, isolating languages like Mandarin Chinese use individual words...

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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?

Certain algae proliferate explosively and become dominant in their environment. These harmful algal blooms often occur when conditions are ideal: high temperatures, abundant light, and...

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Explain why some countries change time zones?

Explain why some countries change time zones?

Geographical disruptions can lead some countries to change time zones to adjust to their geographical reality. For example, countries with a large east-west expanse like...

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Explain why mosquitoes are attracted to ultraviolet light.

Explain why mosquitoes are attracted to ultraviolet light.

Mosquitoes have eyes composed of thousands of lenses called ommatidia. Each ommatidium captures a portion of the surrounding light. Mosquitoes have a multi-layered vision that...

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Explain why some plants have a deep root system?

Explain why some plants have a deep root system?

The adaptation of plants to drought is a crucial mechanism for their survival in arid environments or during prolonged periods of drought. Some plants have...

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