Dolphin can hear and play sounds up to 150 kHz

Which is a range of 150,000 hertz. This means that there are some sounds made by dolphins that people can't even hear. Dolphins use different sounds for echolocation all the time.

💡 @General_knowledgeTM

The benefits of tomatoes

Special mention should be made of the choline contained in tomatoes - it helps reduce blood cholesterol levels, promotes the formation of hemoglobin and strengthens the immune system.

💡 @General_knowledgeTM

An elephant's skin can be up to one inch (2.54 centimeters) thick but is so sensitive that it can sense a fly landing on it.

💡 @General_knowledgeTM

Hens go through "henopause," the point at which they stop laying eggs.

💡 @General_knowledgeTM

The weight of a single cloud is around 500,000 kg.

💡 @General_knowledgeTM

The defibrillator does not restart a stopped heart. On the contrary, its use allows you to stop the work of the heart muscle (myocardium) during a heart attack, so that the body gets a chance to restore a normal sinus rhythm. The use of a defibrillator with the complete cessation of the bioelectric activity of the heart, which corresponds to the isolation on the ECG, does not make sense — this can only be seen in the movies.

💡 @General_knowledgeTM

Lions cannot roar until they reach the age of two.

💡 @General_knowledgeTM

If you constantly invent diseases for yourself, you have Nosophilia.

💡 @General_knowledgeTM

Aprosexia: The inability to focus on anything.

💡 @General_knowledgeTM

When reading quickly, eye fatigue is less than when reading slowly.

💡 @General_knowledgeTM

If you have an important matter in mind, don't tell anyone about it.

When you tell other people about your plans, your brain thinks it's already done, and your motivation decreases. It sounds like superstition, but scientists have tested this fact in studies and found that this is how the psychological mechanism works.

💡 @General_knowledgeTM

Oenophobia: The fear of wine

💡 @General_knowledgeTM

Pets can also be allergic to their owners, because humans are just as allergen carriers.

This "intolerance" is manifested by hair loss and dermatitis.

💡 @General_knowledgeTM

Hearing your name being called, when no one has actually called your name, is a likely sign of a healthy mind

💡 @General_knowledgeTM

Lack of sleep is a major cause of premature facial aging.

💡 @General_knowledgeTM

People who are positive, optimistic, and happy are less likely to suffer from memory loss as they age.

💡 @General_knowledgeTM

In Japan, the odds of being killed by a gun are about the same as an American's likelihood of being killed by lightning — about one in 10 million.

💡 @General_knowledgeTM

The sense of smell is heightened in space

If perfume is sprayed on the ship, it can bring painful sensations.

💡 @General_knowledgeTM

Onions have been proven to lower cholesterol, reduce chances of a stroke, and reduce chances of various types of cancer.

💡 @General_knowledgeTM

The line that separates the day and night sides on Earth is called the Terminator.

💡 @General_knowledgeTM

Cats can’t taste sugar.

💡 @General_knowledgeTM