What is a Food chain?

All animals must have food to give them the energy they need to survive, and they get it by eating other living things. The transfer of energy from one living thing to another is called a food chain. Every animal is either a predator or prey for other animals. Those at the top of the chain are called top predators.

10 Shocking Facts About FACEBOOK That Will Amaze You.

1. 1 in every 13 people on this earth is on Facebook.
2. Facebook is available in 70 different languages.
3. Initially, engineers wanted to call the “Like” button as the “Awesome” button.
4. 83% of prostitutes have Facebook pages.
5. There are around 6,00,000 hacking attempts made on Facebook everyday.
6. Facebook tracks sites you visit even after you sign out.
7. You can’t block Mark Zukerberg on Facebook.
8. The meaning of the term ‘poke’ is undefined.
9. 350 millions photos are uploaded everyday on Facebook.
10. There are 745 million daily mobile users.

Why do I need to eat?

Your body's trillions of tiny cells work day and night to keep you alive. To keep going they need energy, which comes from the food you eat. Food also provides the building materials that your cells use to make you grow, but first your body must digest the food, releasing the simple nutrients that your body can use.

Why do I feel pain if I step on a pain ?

Because as the pin sticks into your skin, receptors send signals along nerves to your spinal cord and brain where these signals are analyzed, causing you to feel pain. Your nervous system enables you to move, think, feel, and controls all the activities going on inside your body.    

What stops the body working normally?

Your body is made from trillions of cells that work together within tissues, organ, and systems to keep you alive. Keeping healthy helps ensure that cells work normally. But sometimes things go wrong and you get ill. Usually, modern medicine can treat and cure these malfunctions.

When did the pharaohs rule?

The great Ancient Egyptian civilization arose more than 5,000 year among farmers living on the banks of the River Nile. It lasted for 3,000 years - longer than any other civilization on Earth. What is really remarkable is that throughout this long history, the way of life and the art and sculpture of Ancient Egypt remained largely unchanged.

Why has my bicycle gone rusty?

You probably left it out in the rain again didn't you? A chemical reaction took place as the iron in the bike reacted with oxygen in rain water and in the air to create a new substance called iron oxide - also known as rust.

How do mushrooms grow so fast?

Mushrooms belong to a unique group of living things called fungi. They consists of a network of hair-like threads called hyphae, which spread unseen through the soil. When the conditions are right, hyphae push upwards out of the soil with incredible speed to form a mushroom.

What is an element?

An element is a pure substance made up of only one type of atom. The atoms of every element are different from the atoms of every other element. 117 elements have so far been discovered or created. Of these, 91 occur naturally on Earth. The others can be created in laboratories. The atoms of one element can combine with atoms of other elements to form compounds. For example, hydrogen and oxygen can combine to form water.