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06 August 2024 07:03

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02 August 2024 10:56

How long does it take to recover from giving blood?

Your body will replace the blood volume (plasma) within 48 hours. It will take four to eight weeks for your body to completely replace the red blood cells you donated. The average adult has eight to 12 pints of blood. You will not notice any physical changes related to the pint you donated.

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28 July 2024 09:14

Is natural gas heavier or lighter than air?

Lighter-than-air natural gas (methane) should not be confused with liquefied petroleum gas. This gas is more commonly called L.P., bottle gas, propane, butane and various other trade names. Liquefied petroleum gases are all heavier than air and will collect in low places when not confined.

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22 July 2024 05:55

​​​​Why don't Birds get Electrocuted sitting on Power Lines?

Birds don't get electrocuted while sitting on power lines due to a combination of factors. Firstly, birds have dry feathers that act as insulators, preventing electricity from passing through their bodies. Feathers trap air, creating a layer of insulation that inhibits the flow of electric current. Additionally, birds' feet are covered in scales, which also provide some insulation.

Secondly, when a bird sits on a power line, its body does not usually make contact with both the live wire and the neutral wire or the ground. For an electric shock to occur, there needs to be a complete circuit, with the current flowing from the power source, through the bird's body, and back to the power source. Since birds typically only touch one wire at a time, the circuit is not completed, and no electricity flows through their bodies.

However, it's important to note that while birds are generally safe from electrocution, accidents can still happen. If a bird's wings touch both wires simultaneously, or if it comes into contact with a damaged or faulty power line, it can
suffer an electric shock. These instances are relatively rare, but they do occur.

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20 July 2024 17:50

What percentage of your weight is muscle?

Exercise is very important in maintaining a healthy body and the muscle mass % is a useful indicator to control it. The normal muscle mass percentage on the body weight lies between 38% and 54% for men and between 28% and 39% for women depending on age and physical activity level.

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16 July 2024 17:45

Why spiritual connect is needed to achieve happiness?

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13 July 2024 02:56

What part of the body never stops growing?

Bones, stop growing after puberty and muscle and fat cells also stop dividing. But cartilage - that's the plastic-like stuff in ears and noses - cartilage continues to grow until the day you die. Not only does cartilage grow, but the earlobes elongate from gravity.

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10 July 2024 06:30

​​​​Why don't Birds get Electrocuted sitting on Power Lines?

Birds don't get electrocuted while sitting on power lines due to a combination of factors. Firstly, birds have dry feathers that act as insulators, preventing electricity from passing through their bodies. Feathers trap air, creating a layer of insulation that inhibits the flow of electric current. Additionally, birds' feet are covered in scales, which also provide some insulation.

Secondly, when a bird sits on a power line, its body does not usually make contact with both the live wire and the neutral wire or the ground. For an electric shock to occur, there needs to be a complete circuit, with the current flowing from the power source, through the bird's body, and back to the power source. Since birds typically only touch one wire at a time, the circuit is not completed, and no electricity flows through their bodies.

However, it's important to note that while birds are generally safe from electrocution, accidents can still happen. If a bird's wings touch both wires simultaneously, or if it comes into contact with a damaged or faulty power line, it can suffer an electric shock. These instances are relatively rare, but they do occur.

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03 July 2024 06:23

​⁉️ Why are your lips red?

✅ Your lips' red or pink pigment comes from underlying blood vessels -- red-colored, blood-filled capillaries are close to the thin skin on your lips. The transition of the reddish-pink outline of your lips to the rest of the skin is called the vermillion border, and it's found only in humans .

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30 June 2024 07:16

7. Building Material: Bamboo is incredibly strong and sturdy. It has been used as support for concrete as well as scaffolding, bridges, and houses.

8. Soil Stability: Bamboo has a wide network of underground roots and rhizomes that prevent soil erosion.

9. Natural Air Conditioner: Bamboo cools the air surrounding it by up to 8 degrees in the summer.

10. Invasiveness: Some species of bamboo, especially ‘running’ bamboos, can be invasive due to their extensive root systems, which allow them to spread rapidly. However, not all species are invasive, and with proper management, the environmental impact can be minimized.

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21 June 2024 09:20

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Today I Learn

16 June 2024 06:21

How much is a moment in time?

A moment is a medieval unit of time equal to 1.5 minutes or 1/40 of an hour. This reckoning is derived from the work of Bartholomeus Anglicus, writing in 1240 that each hour was divided into four points, each point into ten moments, each moment into twelve ounces, and each ounce into 47 atoms.

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13 June 2024 17:04

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06 June 2024 16:53

Why are there 60 seconds in a minute?

THE DIVISION of the hour into 60 minutes and of the minute into 60 seconds comes from the Babylonians who used a sexagesimal (counting in 60s) system for mathematics and astronomy. They derived their number system from the Sumerians who were using it as early as 3500 BC.

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23 May 2024 16:41

​​What is the Challenger deep?

The Challenger Deep is the lowest point on Earth, with a depth of approximately 35,787 feet (10,902 meters) in the Mariana Trench, which is located in the western Pacific Ocean. It is a depression in the Earth's crust, a deep-sea trench that is a remarkable natural feature.

To put that depth in perspective, the Challenger Deep is nearly 7 miles (11 kilometers) deeper than Mount Everest, the highest mountain on Earth, is tall. It's an incredibly extreme environment, with pressures reaching over 1,000 times the pressure at sea level and temperatures ranging from just above freezing to near-freezing.

The Challenger Deep was named after the HMS Challenger, a British ship that first measured its depth in 1875. The trench is a remote and inhospitable region, with only a few humans having visited the bottom, including Jacques Piccard and US Navy Lieutenant Don Walsh in 1960, and filmmaker James Cameron in 2012.

The Challenger Deep is a unique ecosystem, with organisms that have adapted to survive in the extreme conditions. Despite the harsh environment, scientists have discovered a variety of life forms, including giant amphipods, deep-sea fish, and microorganisms that thrive in the trench's dark, cold waters.

The Challenger Deep continues to fascinate scientists, explorers, and the general public alike, and ongoing research and exploration efforts are helping to uncover more about this remarkable and largely unexplored region of our planet.
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06 August 2024 06:28

How many inches is a newborn baby's head?

The bones in your baby's skull are still growing together, and the skull is growing faster during the first four months than at any other time in her life. The average newborn's head circumference measures about 13 3⁄4 inches (35 cm), growing to about 15 inches (38 cm) by one month.

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30 July 2024 08:21

Why does the moon control the tides?

The tides are due to the gravitational pull of the Moon and the Sun on the Earth. Because the gravitational force decreases as the distance squared, the part of the Earth that is closer to the Moon or the Sun is pulled a little extra and a bulge is created.

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25 July 2024 06:56

What percentage of your bones are in your feet?

The human foot has 26 bones, 33 joints, 107 ligaments, 19 muscles and tendons. The 52 bones in your feet make up about 25 percent of all the bones in your body.

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21 July 2024 03:28

Why do cats eyes glow at night?

Cats, dogs, and many nocturnal creatures appear to have glowing eyes because the back of their eyeballs include a special reflective layer called the tapetum lucidum. This helps animals (cats in this case) see better in low light by working like a mirror on the retina to reflect the light back through the eyes,

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19 July 2024 05:52

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14 July 2024 10:48

What animal sleeps 18 to 20 hours a day?

The sleepiest animal in the world is the koala, who sleeps 22 hours a day. Next is the sloth (20 hours), armadillo and opossum (tied at 19 hours each), lemur (16 hours), then hamster and squirrel (tied at 14 hours each).

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12 July 2024 04:13

​⁉️ Why are your lips red?

✅ Your lips' red or pink pigment comes from underlying blood vessels -- red-colored, blood-filled capillaries are close to the thin skin on your lips. The transition of the reddish-pink outline of your lips to the rest of the skin is called the vermillion border, and it's found only in humans .

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08 July 2024 09:14

​​What is Bonsai?

Bonsai is a Japanese art form using cultivation techniques to produce, in containers, small trees that mimic the shape and scale of full size trees. Similar practices exist in other cultures, including the Chinese tradition of penzai or penjing from which the art originated, and the miniature living landscapes of Vietnamese Hòn Non Bộ. The Japanese tradition dates back over a thousand years.
Purposes of bonsai are primarily contemplation for the viewer, and the pleasant exercise of effort and ingenuity for the grower. By contrast with other plant cultivation practices, bonsai is not intended for production of food or for medicine. Instead, bonsai practice focuses on long-term cultivation and shaping of one or more small trees growing in a container.

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01 July 2024 06:58

What color do dogs eyes reflect?

The colors of a dog's eyeshine aren't limited to red and green, either. They can be all shades of blue, orange, yellow, turquoise or even violet. The specific color reflected depends on the amount of zinc or riboflavin in the eye cells. Red glowing eyes at night are the result of blood vessels reflecting light.

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30 June 2024 07:15

Some facts about bamboo:

1.Fast Growth: Bamboo is the fastest-growing plant in the world. It has been recorded at growing 47.6 inches in 24 hours. Some species can even grow over a meter per day under optimal conditions. A new bamboo shoot reaches its full height in less than a year.

2. Oxygen Release: A grove of bamboo releases 35% more oxygen than any other tree out there.

3. Carbon Dioxide Absorption: Bamboo absorbs carbon dioxide at a rate of 17 tons per hectare every year. It can act as a valuable carbon sink given how fast the plant grows.

4. No Fertilizer Required: Bamboo doesn’t need fertilizer to grow. It can self-mulch by dropping its leaves and use the nutrients to grow.

5. Drought Resistance: Bamboos are drought-tolerant plants. They can grow in the desert.

6. Wood Replacement: Bamboos can be harvested in 3-5 years compared to the 20-30 years of most softwood trees.

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21 June 2024 03:35

How many rooms are there in the White House?

White House Trivia. There are 132 rooms, 35 bathrooms, and 6 levels in the Residence. There are also 412 doors, 147 windows, 28 fireplaces, 8 staircases, and 3 elevators.

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14 June 2024 07:49

When was glass first made?

Archaeologists have found evidence of man-made glass which dates back to 4000 BC; this took the form of glazes used for coating stone beads. It was not until 1500 BC that the first hollow glass container was made by covering a sand core with a layer of molten glass.

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13 June 2024 03:50

This robotic manta ray, using a lightweight design and helium for buoyancy , replicates the underwater movements of its aquatic counterpart in the air.

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30 May 2024 04:37

What do you call the smell after it rains?

One of these odors, called "petrichor," lingers when rain falls after a prolonged dry spell. Petrichor the term was coined in 1964 by two Australian scientists studying the smells of wet weather is derived from a pair of chemical reactions.

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20 May 2024 14:35

​​What is the difference between Identical Twins and Fraternal Twins?

Identical twins, also known as monozygotic twins, are formed when a single fertilized egg splits in two and develops into two separate embryos. Since they come from the same egg, they share the same DNA and genetic material, which is why they often look very similar or identical. This rare phenomenon occurs in about 3 in every 1,000 births.

Fraternal twins, on the other hand, are formed when two separate eggs are fertilized by two different sperm. They have different DNA and genetic material, just like regular siblings, and may look similar or dissimilar. Fraternal twins are more common than identical twins, occurring in about 6 in every 1,000 births.

The key difference between identical and fraternal twins lies in their origin and genetic makeup. Identical twins are formed from a single egg and share the same DNA, while fraternal twins are formed from two separate eggs and have different DNA. This difference in origin is what determines their physical similarities and genetic connections.
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