141 questions and answers in this section

Natural Sciences » Oceanography

Explain why moonlight rays can sometimes cause phosphorescence in water?

Explain why moonlight rays can sometimes cause phosphorescence in water?

The moonlight, although in truth a simple reflection of the sun, is sometimes enough to trigger phosphorescence in certain microscopic marine organisms, most often bioluminescent...

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Explain why some beaches are entirely made up of seashells?

Explain why some beaches are entirely made up of seashells?

Shells accumulate on certain beaches due to various geological, biological, and environmental factors. These shells mainly come from the shells of marine animals such as...

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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 large-scale movements of water on the surface of the oceans and seas. They are mainly caused by winds, temperature differences, and gravitational...

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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 some species of fish migrate to warmer waters in winter.

Explain why some species of fish migrate to warmer waters in winter.

The migration of fish is a phenomenon observed in many species, and several reasons explain this behavior. One of the main motivations is the search...

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Explain why is sea water dense?

Explain why is sea water dense?

Seawater is primarily composed of pure water (of course), but with a good dose of dissolved mineral salts that give it its well-known salty taste. The main...

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Explain why tropical lagoons have such clear turquoise waters?

Explain why tropical lagoons have such clear turquoise waters?

Contrary to what one might imagine, it is not special or colored pigments in the water that give it this beautiful turquoise color. This phenomenon...

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Explain why do giant waves form off certain coasts?

Explain why do giant waves form off certain coasts?

The presence of certain underwater geological formations is a determining factor in the occurrence of giant waves. Typically, these are canyons, trenches, or sudden rises...

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Explain why are the oceans more acidic today than they were 100 years ago?

Explain why are the oceans more acidic today than they were 100 years ago?

Since the industrial revolution, a huge amount of carbon dioxide (CO₂) has been released into the atmosphere. This mainly comes from the burning of oil, coal, or...

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Explain why do jellyfish gather in sometimes massive swarms?

Explain why do jellyfish gather in sometimes massive swarms?

Jellyfish gather primarily because they follow their reproductive cycles. For some species, being together greatly facilitates the encounter with reproductive partners, leading to better spawning. Another key...

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