How many creatures are going to disappear on Earth every year

Seventy-five species are extinct every day around the world, and three species are labeled dead every hour. Many species have disappeared from the face of the earth before they can be described and named by scientists. According to the world's Red Book, 110 species and subspecies of mammals and 139 species and subspecies of birds disappeared from the earth in the 20th century.

At present, 593 species of birds, more than 400 species of mammals, 209 species of amphibians and reptiles and more than 20,000 species of higher plants are endangered in the world.

3 species go extinct every hour.

A team of researchers led by Jeremy Thomas of the Centre for Ecology and Hydrology in the UK reported in the recent issue of the journal Science that over the past 40 years, there has been a 54 percent decline in native bird species, 28 fewer native wild plant species and a staggering 71 percent fewer native butterfly species. Insects, which have long been considered to be numerous and resilient, are also beginning to face extinction.

Based on this, scientists have deduced that the Earth is facing a sixth mass extinction. Dr. Jiang Zhigang, chief researcher at the Institute of Zoology of the Chinese Academy of Sciences and executive deputy director of the Chinese Scientific Committee on Endangered Species, also believes that from the perspective of nature conservation biology, the earth has entered the sixth mass extinction period since the beginning of the industrial revolution.

According to statistics, 75 species are extinct every day and 3 species are extinct every hour in the world.

First of all, there are about 1.74 million known species of organisms, including more than 100,000 species of fungi, more than 400,000 species of plants, more than 1.1 million species of animals (including more than 900,000 species of insects), and the rest are prokaryotes and protists.

There are even more unknowns, and in my microbiology major, bacteria and viruses are constantly mutating and evolving, and new species are constantly being created over time. At present, there are many places in the rainforest and the deep sea that have not been set foot by humans, and some new creatures will be discovered in these places.

Unknown creatures, of course, the number is also unknown.

It's a mystery, no one knows. We humans are just a kind of creatures on the earth, and we are only temporarily becoming the overlords of the earth. I don't think we humans will know how many unknown creatures there are on Earth, and neither will other species.

You can only know more and more, but you will never know everything.

Until the mid-60s, scientists thought there were about 3 million species on Earth, and now they believe there are at least 5 million. But many experts point out that the conservative estimate is 10 million. According to the rate of increase in the yield of the species, the final total impulse of the animal species is:

There are 4,300 species of mammals, about 8,000 species of birds, 6,000 species of reptiles, 3,500 species of amphibians, and 10,000 species of fish. Recently, surveys of insects in Peru's tropical forests have led to the discovery of many new species, leading to estimates that the total number of species on Earth exceeds 30 million. In the world, the Amazon and the Zasan-Burn Basin are considered to be the most species-rich regions.

Of the remaining species, 20 percent grow in Latin American forest calendars other than the Amazon, and another 20 percent in Asian forests and African forests outside the Zaire Basin. To date, the total number of identified species is only 1.4 million to 1.74 million. About 87% of mammals, reptiles, amphibians, birds, and fish have been identified, while most of invertebrates and microorganisms have not yet been recognized, and more than 90% of all plants have not been studied.

As a result, human beings still have a very limited understanding of the abundant species resources, and only a small part of them are exploited.

1 Although scientifically speaking, the competition of nature and the survival of the fittest. These animals also do not have the ability to fight against humans, nor do they have the reproductive adaptability of mice and cockroaches, but only beautiful fur, delicious flesh and bones, and a high degree of sensitivity to the environment. All this is fragile and vulnerable under the powerful human desire to conquer nature.

The birth, old age, sickness and death of human beings make the same kind of people sad and regretful. Watching these creatures disappear from the earth due to human selfish desires, what can we do and what should we do!

In the 3.5 billion years since the birth of living things on Earth, various living things have been born and died, and this kind of change has continued. However, since the 20th century, various living things have disappeared from the earth at an unprecedented rate. In the age of the dinosaurs, only one creature went extinct every thousand years.

During the 300 years from 1600 to 1900, one creature went extinct about every four years. However, since the 20s, one organism has gone extinct every year, and between 1975 and 2000, there will be one creature every 13 minutes, and more than 40,000 organisms will disappear from the earth every year. Since the birth of life, many organisms that have survived for a long time have disappeared in large numbers in a very short period of time in the last century.

Currently, there are at least 5 million to 30 million species of organisms living on Earth. Of these, scientists know about 1.6 million species. About 1 to 2 per cent of these organisms live in the cold zone, 13 to 24 per cent in temperate zones and 74 to 86 per cent in tropical zones.

For wildlife, it is impossible to survive if the habitat such as tropical rainforests is destroyed. As a result of the decline of tropical rainforests, 17 per cent of living things are expected to disappear from the planet by the year 2000. Not only tropical rainforests, but also wetlands, coral reefs, islands and other areas where wildlife lives are also being destroyed.

In addition, wildlife is gradually declining due to human hunting. In addition to predation, tropical fish are kept as pets, fur coats, crocodile leather bags, ivory jewelry, etc., so that endangered animals are constantly hunted. In particular, developed countries such as Japan are buying these items in large quantities, and I think jewelry made from killing wild animals is not beautiful.

Everyone knows that there are very few giant pandas in China. Rhinoceros in Indonesia, bobcats in Japan, monkeys in Brazil, seals in the Mediterranean, Arabian deer, etc., are all animals that are on the verge of the edge. Among the birds, the American crane in North America, the California eagle, the Japanese heroon, and the Spanish eagle are on the verge of extinction.

African elephants, African tigers, pandas, wolves, etc., are also declining, as are hawksbill turtles, dog vultures, red-crowned cranes, and other animals that live around us. In addition, millions and tens of millions of animals are dwindling, and there are more endangered animals than can be counted. Of Japan's 668 bird species, 119 are endangered.

Humans are forcing animals and plants as friends to disappear from this earth.

This exact number is not legally defined, and it varies from year to year, so it can only be roughly estimated.

In geological history, organisms have experienced 5 natural mass extinctions due to geological changes and cataclysms.

The Ordovician is the second epoch of the Paleozoic Era, which began 500 million years ago and lasted for 65 million years. ）

The Devonian is the fourth epoch of the Paleozoic Era, which began about 100 million years ago and ended 100 million years ago, lasting about 50 million years. ）

The Permian is the last epoch of the Paleozoic Era and an important coal-forming period. The Permian is divided into Early Permian, Middle Permian, and Late Permian. The Permian period began about 100 million years ago and extended to 100 million years, a total of 45 million years. ）

The Triassic is the rise of reptiles and gymnosperms, the first of the Mesozoic era. Located between the Permian and Jurassic. It began from 100 million years ago and lasted for about 50 million years. ）

Due to the impact of human activities, species are extinct at a rate 1,000 times faster than natural extinction, and the Earth has entered the sixth mass extinction period.