88 questions and answers in this section

Natural Sciences » Ecology

Explain why does the city of Eilat (in Israel) offer coral reefs in the middle of the desert?

Explain why does the city of Eilat (in Israel) offer coral reefs in the middle of the desert?

Nestled between the dry mountains of the Negev Desert and the divinely blue waters of the Red Sea, Eilat is truly unique. Located at the...

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Explain why do shearwaters travel long distances without getting lost?

Explain why do shearwaters travel long distances without getting lost?

Seabirds have a true internal compass thanks to their sensitivity to the Earth's magnetic field. This natural mechanism acts somewhat like an integrated GPS, intuitively...

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Explain why do sea anemones close up in the presence of threats?

Explain why do sea anemones close up in the presence of threats?

Sea anemones possess a rudimentary nervous system made up of a network of nerve cells called a diffuse nerve net. When something touches them or...

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Explain why is the city of Houtouwan (in China) invaded by vegetation after its abandonment?

Explain why is the city of Houtouwan (in China) invaded by vegetation after its abandonment?

In the 1980s, Houtouwan was a small fishing village on Shengshan Island in China. The inhabitants primarily lived off fishing, in a place bordered by...

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Explain why lakes can change color depending on the season?

Explain why lakes can change color depending on the season?

The color of a lake mainly depends on the elements present in its water and how it reflects light. Pure water absorbs red and lets...

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Explain why does the city of New Delhi (in India) experience extreme levels of pollution?

Explain why does the city of New Delhi (in India) experience extreme levels of pollution?

In New Delhi, a large portion of air pollution comes from road traffic. The city is filled with vehicles, many of which run on diesel, particularly harmful,...

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Explain why does the city of Norilsk (in Russia) sometimes see its snow turn black?

Explain why does the city of Norilsk (in Russia) sometimes see its snow turn black?

Norilsk is located beyond the Arctic Circle, in the heart of Siberia. It is the second largest city in a polar region, after Murmansk, and...

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Explain why has the town of Okuma (in Japan) remained evacuated since the Fukushima disaster?

Explain why has the town of Okuma (in Japan) remained evacuated since the Fukushima disaster?

On March 11, 2011, a massive earthquake with a magnitude of 9 struck hard on the northeast coast of Japan. In its wake, an impressive...

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