86 questions and answers in this section

Natural Sciences » Ecology

Explain why the Statue of Liberty is green?

Explain why the Statue of Liberty is green?

The statue was primarily made of copper, a metal chosen for its ease of being shaped and its good resistance to outdoor conditions. In total, about 31...

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Explain why mosquitoes bite us?

Explain why mosquitoes bite us?

Only female mosquitoes bite us, as they need human blood for the development of their eggs. Males, on the other hand, are satisfied with a...

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Explain why flies often get stuck in the house?

Explain why flies often get stuck in the house?

Flies often get stuck in houses because of the small size of the openings. Indeed, these insects are attracted by the natural light coming through...

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Explain why coral reefs are in danger.

Explain why coral reefs are in danger.

Plastic and chemical waste thrown into the sea or coming from land is a real headache for coral reefs. Plastics, for example, suffocate or break...

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Explain why do koalas sleep so much?

Explain why do koalas sleep so much?

Koalas have a particularly slow metabolism, meaning they burn their energy very slowly. The reason: their ultra-specialized diet consisting exclusively of eucalyptus leaves, a plant...

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Explain why poison dart frogs are so brightly colored?

Explain why poison dart frogs are so brightly colored?

The bright colors of poison dart frogs primarily come from specific pigments present in the cells of their skin. These pigments, called pterins and sometimes...

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Explain why mangroves protect coastlines from storms?

Explain why mangroves protect coastlines from storms?

The roots of mangroves act as a true natural brake against the waves that reach the shore. Their dense, intertwined, and often submerged network significantly...

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Explain why the nuclear alert siren looks like a turtle?

Explain why the nuclear alert siren looks like a turtle?

The visual similarity between a nuclear alert siren and a turtle is primarily due to the rounded shape of their silhouette. Most sirens used have...

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Explain why dragonflies fly so fast?

Explain why dragonflies fly so fast?

Dragonflies possess particularly powerful muscles implanted directly at the base of their wings, allowing them to flap with speed and strength. These so-called direct muscles...

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Explain why soil biodiversity is essential to preserve life on Earth.

Explain why soil biodiversity is essential to preserve life on Earth.

A living soil is essential because organisms such as earthworms, fungi, and bacteria continuously recycle organic matter. Specifically, they decompose dead leaves or other plant...

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