What did man get from plants and invent?

1948 One day, the Swiss inventor George liked to take his dog out for a walk. Once he went home for a walk and found that his trouser legs and dog were covered with a seed. Grass seeds are firmly attached to dog hair, and it takes some effort to pull them down. George thought it was strange. With keen observation, he carefully observed the grass seeds with a magnifying glass.

Finally, it was found that the fibers of grass seeds and dog hair crossed together. He thought, if these two shapes were adopted, wouldn't a buckle be invented? Since then, people have had a good helper in their lives-velcro invented by George.

Step 2 see

Luban once went to the deep mountain to cut down trees, and accidentally slipped, and his hand was cut by the leaves of a wild grass, oozing blood. He picked the leaves and touched them gently. It turns out that there are sharp teeth on both sides of the leaf. He scratched the back of the hand with these small, dense teeth and even scratched a hole. It was these small teeth that cut his hand.

Lu Ban also saw a big locust on a piece of wild grass, and many small teeth were arranged on two big dies, which could quickly grind the leaves. These two things inspired Lu Ban. So, after many experiments, he finally invented a sharp saw.

Lu Ban named this newly invented tool "Saw". This is the origin of the saw.

Step 3: straws

The straw was invented by Marvin Si Tong of the United States in 1888. /kloc-in the 0 th and 9 th centuries, Americans liked to drink cold and light wine. In order to avoid the hot air in their mouths, they drink directly without their mouths and suck with hollow natural straws. However, the natural straw is easy to break, and its own taste will penetrate into the wine.

At that time, Marvin Stone, an American cigarette manufacturer, got inspiration from cigarettes and made a paper straw. After tasting, it will neither break nor smell. Since then, people not only use straws when drinking light wine, but also like to use paper straws when drinking other cold drinks.

The main value of extending the data factory:

Thousands of plants have been planted to beautify the environment, provide shade, regulate temperature, reduce wind speed, reduce noise, provide privacy and prevent soil erosion.

People will place cut flowers, dried flowers and indoor potted plants indoors, while outdoor images of lawns, shade trees, ornamental trees, shrubs, vines, perennial herbs and flower beds are usually used for art, architecture, temperament, language, photography, textiles, coins, stamps, flags and armbands.

The artistic types of living plants are green carving, bonsai, flower arrangement, tree wall and so on. Ornamental plants sometimes affect history, such as tulip mania.

Plants are the basis of billions of dollars of tourism every year, including botanical gardens, historical parks, national principalities, tulip fields, tropical rainforests and colorful autumn leaves.

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