On why nature is "a big book that can't be read"

Because people's intelligence is limited and genes cannot be copied, they have been in the stage of continuous exploration. Nature has endless mysteries and endless fun.

There are 45336 species of vertebrates in nature, including birds 1244 species and fish 3862 species. There are more than 3 million species of insects, and only 1 10,000 species have been confirmed.

Nature is a big book that you can't finish reading. This sentence comes from the sixth volume of Hunan Education Publishing House, which is an endless book.

Extended data:

The original text of a book you can't understand:

When I was five or six years old, I went to nature to find interesting things. Lush flowers and trees, floating clouds and birds in the air, animals and insects on the ground, crabs and fish in the water and so on. It's memorable and fun.

The little sparrow jumps and jumps, and its happy and lively appearance makes you happy. The eagle hovers in the sky, spreads its wings and glides, and sometimes swoops down, giving people a sense of heroism.

Small insects are often incredible. Ants move, such a long queue, such an orderly camp, are doing their best to move goods. When the two armies confronted each other, they beat each other to death until the bodies piled up. The spirit of courage and loyalty is really admirable.

Flowers, plants and trees all have different tastes in their growth, flowering and fruiting. The leaves of grass are different, some are long, some are short, and some are prickly; Flowers are red, yellow, purple and blue, single and double, with different shapes, giving people endless fun.

There are all kinds of fruit trees around my home, including pear trees, peach trees, orange trees and grapefruit trees. They have different flowers and fruits in different seasons. The fruit picked directly from the tree is particularly delicious. There are two bamboos behind the house, which are my favorite. Like mushrooms after rain, they grow a few inches a day and grow as tall as me within a few days of being unearthed.

Green stems and leaves, slim and graceful, look so pure. The breeze is blowing, and there is a rustling sound, so gentle and delicate. When the wind blows, the bamboo forest is always the first to make a brushing sound.

Nature is a big picture book that can't be read, and it is also a big book that can't be read. There are endless mysteries and endless fun in it.