221 Facts Tell Me Why

Some animals have the special ability to change colour according to their surroundings. It allows them to blend in with their surroundings and to save themselves from predators. Some animals might change colour of their skin/coat to green and in spring and summer and grow white feathers or fur in winter. Animals also change color […]

After the rain, the air becomes clean and fresh. The rain washes away the dust particles hanging in the air and removes them from the air. Then moisture keeps dust in the ground so that it may not float around. Moist air also carries the smell of moist grass and soil more effectively to your

Nobody really knows the real reason for sleeping. Some learned men believed that sleep is vital for giving our bodies rest and allowing it to prepare for the next day. Our bodies all require long periods of sleep to restore and rejuvenate in order to grow muscle, repair tissue and synthesize hormones. But whatever the

The sleeping birds do not fall because they are ‘locked’ in the place or branches. Two thin tendons, called ‘flexor tendons’, extend from the leg muscles down the back of the tarsus bone and attach to the toes. When a bird lands on a perch, these tendons tighten and so the toes lock around the

The main cause is the Earth’s atmosphere. Stars do not really twinkle; they just appear to twinkle when seen from the surface of the Earth. Stars twinkle in the night sky because of the effects of our atmosphere. The globe is surrounded by many layers of air in the atmosphere. When starlight enters our atmosphere,

Yawning wakes up our brain. In order for the brain to remain vigilant, it needs oxygen which we get in plenty when we breathe in air. Oxygen travels to our entire body with the help of blood. After a busy and hard day, the heart pumps blood more slowly than usual. However, tired brains need

The cat’s eyes glow in the dark so that the cat may see better. Inside the cat’s eye, there are cells that function as a mirror. The eye-catching light is reflected back. This is how the cat can use dark light for a little light. When you see the cat’s eyes moving in the dark,

It depends on the hens which have laid eggs. Most white-feathered hens lay white eggs. Brown eggs usually come from red-feathered hens with red earlobes, but there are also other types of chickens. Some of them lay white eggs, some brown eggs and some spotted eggs. However, there are some breeds of hens that live

Because shampoo is not the same as teardrops. When shampoo gets in the eyes, the eyes immediately understand that it is different. The liquid that lubricates the eye is approximately neutral in pH, and because eyeballs are such delicate and sensitive little flowers, even tiny changes in the environment upset them. They send a screaming

Like everything, soap is made up of millions of molecules and those are released as soon as soap gets wet. For washing hands, you apply soap and rub them together. This rubbing is the ‘friction’. Water, by itself, is unable to get rid of germs but soap helps break down the naturally produced oil from

There are small creatures living in our mouths that are known as bacteria. Without proper brushing, food stays in between the teeth. The bacteria then start to feed on this food-sugar. As they do so, they release strong acids in the mouth that are strong enough to melt the hard shell of the tooth and