Plant
Plants are living beings. They need food, water and air for survival. (General Classification)
Plants derive their food from the earth and the air. If you look at their roots, you will find that ends of these roots are like fine fibers. We call them root-hairs. They absorb water and minerals, then transport them upwards to the leaves through the trunk and the branches. It is the leaves which prepare the food. (Description)
The green material, chlorophyll, prepares the food like a machine. It converts the carbon dioxide taken from the air and water from the ground into sugar with the help of sunlight. This chemical reaction is called photosynthes. In fact, the chlorophyll takes energy from the sunlight and uses it to synthesize the hydrogen from water and carbon from carbon dioxide for making sugar. This reaction also gives out oxygen and water which are excreted by the leaves. (Description)
Australia
Plants are living beings. They need food, water and air for survival. (General Classification)
Plants derive their food from the earth and the air. If you look at their roots, you will find that ends of these roots are like fine fibers. We call them root-hairs. They absorb water and minerals, then transport them upwards to the leaves through the trunk and the branches. It is the leaves which prepare the food. (Description)
The green material, chlorophyll, prepares the food like a machine. It converts the carbon dioxide taken from the air and water from the ground into sugar with the help of sunlight. This chemical reaction is called photosynthes. In fact, the chlorophyll takes energy from the sunlight and uses it to synthesize the hydrogen from water and carbon from carbon dioxide for making sugar. This reaction also gives out oxygen and water which are excreted by the leaves. (Description)
Razor
A razor is a tool which is found in nearly every bathroom. A man who has thick hair on his face may have to shave twice a day. It is a habit which can be dangerous. For many years, a razor was a handle with a long piece of steel which was sharp and flat at one end. These razors had a long open blade.
But today’s razors are safer and more convenient to use. The thing which makes today’s razor safe is that the blade is small thin sharp piece of steel. The person who invented razor blades was a man called King Gillette. He was a clever man who had many ideas for new inventions. He wanted to make a blade that was safe and which could be used several times. In 1891, he invented a new type of razor blade. It was short and it was held in a special handle. The sharp edge of the blade did not stick out very far. It was a razor which was safe to use. It was more difficult to cut yourself than with the older type of razor.
Gillette’s razor blade became popular. It was an invention which worked well and which everybody need because each blade only lasted 8 to 10 times. Gillette sold many of his new safety blades and soon became a millionaire.
Dolphin
For many years, many people believed that the cleverest animals after man were the chimpanzees. Now, however, there is proof that dolphins may be even cleverer than these big apes.
Although a dolphin lives in the sea it is not a fish. It is a mammal. It is in many ways, therefore, like a human being.
Dolphins have a simple language. They are able to talk to one another. It may be possible for man to learn how to talk to dolphins. But this will not be easy because dolphins cannot hear the kind of sounds man can make. If man wants to talk to dolphins, therefore, he will have to make a third language which both he and the dolphins can understand.
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