How did the dinosaurs become extinct? Have dinosaurs really disappeared?

There may be multiple versions of the story of the destruction of the world, and the extinction of life directly caused by an asteroid impact is only one of them. Were the massive climate changes that led to the extinction of the dinosaurs caused by volcanic eruptions? Or was it caused by an asteroid impact? Scientists have debated this question for decades. As research continues, more and more evidence confirms that the asteroid impact caused the extinction of the dinosaurs.

New research has found that a catastrophic asteroid impact 66 million years ago may have triggered volcanic eruptions deep in the ocean, which in turn caused a series of natural disasters such as wildfires, cooling, and acid rain. All unfortunate events combined to destroy the earth. More than 70% of all life on earth, including dinosaurs.

In the movie "The End of the World", in order to prevent asteroids from hitting the earth, humans use spacecraft to deliver nuclear warheads to destroy the asteroids that are about to hit the earth.

There are many hypotheses for the extinction of dinosaurs. So far, in addition to the comet impact theory, there are more than 20 conclusions about the extinction of dinosaurs! For example: climate change theory, racial struggle theory, continental drift theory, geomagnetic change theory, plant poisoning theory, acid rain theory, orogeny theory, volcanic eruption theory, ocean ebbing theory, warm-blooded animal theory, temperature and sex theory, species aging theory, The theory of alkaloids, the theory of reproductive frustration, the theory of sudden temperature changes, the theory of atmospheric changes, the theory of meteor shower impact, the theory of gravity changes, etc.

Ten conjectures on the reasons for the extinction of dinosaurs: They are as follows

1. Merge event

There are also theories that the above causes of the extinction of the dinosaurs appeared during the same period. For example, after an asteroid hit the earth, a large-scale volcanic eruption led to the extinction of the dinosaurs, or the emergence of a super hurricane and the simultaneous occurrence of high temperatures from global storms led to the extinction of the dinosaurs.

2. Volcanic eruption

Some theories believe that there were severe volcanic eruptions at that time, which caused a large amount of sulfur to enter the air, warm the global climate, cause ocean acidification, and eventually lead to the extinction of the dinosaurs.

3. Comet hits the earth

Some theories believe that it was not an asteroid that hit the earth, but a comet. If a comet hit the earth, it would cause more dust and debris to enter the air, leading to the extinction of the dinosaurs.

4. Emergence of new diseases

Some scientists believe that a new disease appeared at that time, which caused the dinosaurs to be unable to develop an immune system and eventually led to the extinction of the dinosaurs.

5. Water level changes

Some professors believe that changes in ocean water levels will also greatly affect species on land, leading to the extinction of the dinosaurs.

6. Continental Drift

The existential theory believes that the extinction of dinosaurs is related to continental drift. Continental drift will cause great changes in the living environment of dinosaurs, leading to the gradual extinction of dinosaurs.

7. Mammalian competition

Dinosaurs and mammals already existed at that time. Mammals did not need to lay eggs and consumed less food. Therefore, in the end, dinosaurs failed to compete with mammals, causing the dinosaurs to become extinct while mammals have survived to this day.

8. Super hurricane

Scientists believe that an asteroid hitting the Earth, triggering the formation of a super hurricane in the ocean that swept across the world at a speed of 600 miles per hour, could have wiped out the dinosaurs.

9. Global storm

Many scientists believe that the cause of the extinction of the dinosaurs was the impact of an asteroid on the earth, which caused the rock particles to break into sand grains, which reached an extremely high temperature of 1,482 degrees Celsius and spread around the world.

10. Asteroid hits the earth

Iridium is a rare species in the earth's crust, but it is common on planets. Researchers found large amounts of iridium in the sedimentary layers of the Cretaceous period, so they concluded that the extinction of the dinosaurs may have been caused by an asteroid impact on the earth.

Did the dinosaurs really disappear?

To this day, many people are curious, did the dinosaurs really disappear in the mass extinction 66 million years ago? Regarding this issue, some researchers believe that the dinosaurs may not have been "annihilated", and some of them may have evolved into other creatures, following the law of natural selection and survival of the fittest.

animal tags： dinosaur survival fossil organism evolution mammal