1273 questions and answers in this section
Explain why is the lava from Hawaiian volcanoes so fluid?

Explain why is the lava from Hawaiian volcanoes so fluid?

Hawaiian lava is primarily composed of basalt. Basalt is rich in iron and magnesium but low in silica. Less silica means less viscosity, resulting in...

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Explain why do stars twinkle more in winter than in summer?

Explain why do stars twinkle more in winter than in summer?

The light of the Moon can affect the visibility of stars in the night sky. In winter, nights are longer, the Moon rises later, and...

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Explain why certain species of ferns grow on tree trunks?

Explain why certain species of ferns grow on tree trunks?

Epiphytic ferns have developed special adaptations to survive in the heights of trees. They absorb water and nutrients directly from the air and rain through...

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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?

Houtouwan is a fishing village located on Shengshan Island, which is part of the Shengsi Archipelago in eastern China. The village is about 140 kilometers...

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Explain why do some aquatic plants float on the surface of the water?

Explain why do some aquatic plants float on the surface of the water?

Some aquatic plants float due to special adaptations. They have lightweight structures and air pockets that help them stay at the surface. These air pockets...

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Explain why can some lakes form under the ice?

Explain why can some lakes form under the ice?

Lakes beneath the ice primarily form during glaciation periods. This means when the Earth was much colder and a vast portion of its surface was...

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Explain why Amazonian tribes use specific plants for rituals?

Explain why Amazonian tribes use specific plants for rituals?

Amazonian tribes possess ancestral knowledge about the plants in their environment. This knowledge is often passed down orally from generation to generation. The shamans, considered...

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Explain why volcanic ash clouds can be visible for thousands of kilometers?

Explain why volcanic ash clouds can be visible for thousands of kilometers?

Volcanic ash clouds are projected very high into the atmosphere. They can reach up to 20 kilometers in height. It's like launching a ping-pong ball...

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Explain why carrots can have different colors?

Explain why carrots can have different colors?

Carrots can display a wide range of colors thanks to different pigments. Orange carrots store a lot of beta-carotene, which gives them their bright hue. This pigment...

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Explain why were carrots originally purple?

Explain why were carrots originally purple?

Originally, carrots were purple and not orange at all. Domesticated in Central Asia, they were cultivated for their edible roots. Wild carrots had varied colors, often white...

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