What are the natural enemies of man, what are the natural enemies of man

"Four evils".

The "four pests" refer to flies, mosquitoes, rats, and cockroaches. They all have one thing in common: they are extremely numerous. These four animals can never be counted by humans, and their distribution is almost worldwide.

Among them, mosquitoes are directly sucking human blood to transmit the bacteria and viruses they carry to humans, because of their large number, mosquitoes have become the world's most killing creatures, according to incomplete statistics, the number of people who die from mosquito-borne diseases exceeds 70,000 every year.

1.Flies can carry up to 60 species of bacteria and pose a huge threat to the human body. Numerous tests have shown that large amounts of hair on the surface of flies, as well as digestive and blood systems, can carry pathogens and then transmit them to humans through contact with food.

2.Mosquitoes can spread diseases, because mosquitoes like to live in a dark and damp environment, the body contains a large number of bacteria, viruses, when sucking blood on the surface of the human body, these bacteria and viruses will enter the human body through mosquitoes.

3.Rats move around in a variety of places every day and carry a variety of bacteria on their bodies. Without knowing it, humans eat the food that rats have eaten, and at this time, the virus transmitted by rats in the food will enter people's bodies, and people may suffer from epidemic hemorrhagic fever, which is likely to endanger life if it is not timely.

4.Cockroaches are one of the more common pests because cockroaches are animals that eat and pull, and things and objects that they crawl on can be contaminated. Cockroaches themselves are not poisonous, but they carry many germs and parasites in their bodies, and accidentally bitten by cockroaches may be infected with the contagious plague of the murine bacillus and the paradysentery bacillus that cause diarrhea.

5.There are 2,500 species of snakes in the world, including more than 650 species of venomous snakes, threatening a vast area of one billion people. According to the World Health Organization, five million people worldwide are bitten by snakes every year, and 100,000 of them die.

Humans have no natural predators

We are proud that humans are at the top of the planet's food chain.

If human beings have natural predators, there is a species in nature that specializes in preying on humans, and the energy obtained by this species is even less than that obtained by humans, and it is difficult to maintain the survival and reproduction of this species with such scarce energy, and the result is only extinction.

Therefore, theoretically, perhaps in the early days, there may indeed be a species in nature that specializes in preying on humans, that is, human natural enemies, but the energy provided by humans is far from allowing this species to survive, and the result is only extinction.

Early humans may have had natural predators, such as ferocious beasts, and it was difficult for early humans to defend against beasts by brute force alone. However, with the increase of human brain capacity, especially learning to use fire, making tools, etc., the combat effectiveness of human beings has gradually improved, and the natural enemies of human beings will gradually become extinct, and human beings have stood at the top of the food chain with their super intelligence.

Humans have no natural predators, and we are proud to be at the top of the planet's food chain. But nature never bows to any species, and human wisdom seems insignificant in the face of nature.