What is the use of water for humans, and what is the role of water for humans?

We come from water.

In 1960, Oxford zoologist Alister Hardy proposed the "aquatic ape" theory, which means that humans have lived in more than half of the aquatic life. This theory became synonymous with jokes. But as time passed, some of the experts who had made a mockery began to revisit the question.

Tobias is one of them.

Walk upright in the water.

University of the Witwatersrand professor Love Moritus? Tobias, who excavated fossils in Africa for 50 years, believes that Hardy's theory is debatable. Why do humans walk upright, why are they covered with fat, they have lost all their hair, and why are they able to speak?

We can speculate that in ancient times, a tribesmen were forced to retreat to the shore in the face of competition, and in order to survive, they gradually entered the water to catch fish, began to learn to stand in the water, and eventually walked upright. We can observe apes and you will see that they walk on two legs while wading through water. We can also do experiments in swamps, seashores, lakes, and small rivers, and we will find that walking is more effective than swimming over.

Habits developed by ancestors in the water.

Humans and chimpanzees are 5 million years apart, and genetically they are very similar to chimpanzees. But modern humans can swim, and chimpanzees are extremely afraid of water. A chimpanzee once slipped into a ditch while wandering around the water's edge, and an expert pulled it up.

Surprisingly, the young female orangutan who had lost her footing only had a few bubbles when she was planted in the water, and the water was still so calm that she didn't even struggle much. Moreover, the ditch is extremely shallow, it is only the head that is immersed in the water. But we humans are born with a diving reflex that stays with us for life.

Tobias speculates that this may be a habit our ancestors developed in the water.

Water promotes brain evolution.

2.5 million years ago, humans began to use tools and brain volume increased. 100,000 years ago, the brain capacity of modern humans reached three times the theoretical estimate, far greater than the weight that body weight should support. Recent research has confirmed that water plays an important role in the evolution of the human brain.

20% and 30% of the brain's weight is made up of long-chain lipotic acids, which end up in the aquatic food chain. Studies have shown that the chemical components needed for the brain come from tiny seaweeds, which means that fatty acids are found in all organisms in the aquatic food chain. Chimpanzees do not eat fish, and their brains are 2 3 smaller than the human brain.

Maintain the body's water balance, if the body's water balance is not balanced, people will get sick or die.

To put it bluntly, water is the source of human life.

There is no water. Humans can't live.

The most important substance of life.

1. Meet the daily drinking needs of human beings.

2. Sufficient water for plants.

3. Provide cleaning of clothes and supplies.

4. Ensure the survival and reproduction of animals.

5. Use water resources to generate electricity.

The role of water in everyday life:

The manchu is a daily drink for human beings to sustain life on earth.

Wash laundry. Irrigation and irrigation of farmland and raising of livestock.

Sustaining the Earth's water cycle.

Water is an indispensable thing for human beings, and as a limited water resource, we need to conserve water and talk about it, which can be done from the following aspects:

When you run out of water, turn off the faucet.

Recycled water, which can be reused many times, should be reused as much as possible.

Don't leave the faucet wide open when using water.

Don't play with water, don't waste water at will.