Science & Nature · 2

What percentage of Earth's oxygen is produced by the oceans?

Answer

At least 50%

At least 50% of Earth's oxygen is produced by ocean phytoplankton through photosynthesis, making them critical to our atmosphere.

💡 Did you know?

Phytoplankton are microscopic but produce so much oxygen they're often called 'the lungs of the planet.'

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Science & Nature

What is the deepest part of Earth's oceanic trench?

The pressure at the bottom of the Mariana Trench is over 1,000 times greater than at sea level.

Science & Nature

What is the process by which water moves from Earth's surface to the atmosphere?

The water cycle is so efficient that a single water molecule cycles between the atmosphere and Earth's surface about once every 9 days.

Science & Nature

What is the name of the boundary between tectonic plates?

The Ring of Fire, where about 75% of Earth's volcanoes are located, is a plate boundary region surrounding the Pacific Ocean.

Science & Nature

What is the name of the protein in muscles that contracts to produce movement?

The action of actin and myosin is so efficient that a single muscle cell can contract thousands of times per second.

Science & Nature

What is the name of the hormone produced by the pancreas that regulates blood sugar?

When the body becomes resistant to insulin, it can lead to type 2 diabetes, affecting millions worldwide.

Science & Nature

What is the name of the protein in bones that provides flexibility?

Bones are living tissues that constantly break down and rebuild themselves—your entire skeleton is replaced about every 10 years.