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The most convincing conjecture in the past was that the Earth was hit by a huge celestial body that led to the extinction of the dinosaurs, but now this hypothesis has been disproved, because the time between the fall of the first dinosaur and the death of the last dinosaur was 3,000 years away, and the impact of a comet hitting the Earth could not last for 3,000 years.
New theories confirm that the extinction of the dinosaurs may have been due to flowers. As we all know, dinosaurs were extremely foody animals, and their food was extremely simple, they only ate mosses (mosses from the age of dinosaurs, the shortest was also 30 meters tall) (of course, there were carnivorous dinosaurs that preyed on other dinosaurs) The new scientific basis has been formalized, the time of dinosaur extinction coincided with an ice age, when the temperature was only 30 degrees, mosses could not grow, and flowers - this higher life appeared, they could survive in extremely difficult conditions. But the food for the dinosaurs was gone, so slowly the dinosaurs starved to death due to lack of food.
You may wonder how it could be starvation, but in fact, an adult dinosaur costs dozens of tons of moss a day, and when the whole earth is full of flowers, the dinosaur can only regretfully disappear from the earth.
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You have to be absolutely right, that's 8 possible. However, there are many reasonable speculations, and what is said upstairs is detailed enough. And I would add that the smaller the creature, the more competitive it is.
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If you don't look kind, you won't be 0 points in a hurry.
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How did dinosaurs become extinct?
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Upstairs reproduction.
It should be an asteroid impact, the biological chain is broken, and it is dead.
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Alien creatures invade the Earth in ancient times.
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Dinosaurs first appeared in the Triassic period about 240 million years ago and died out in the Cretaceous period about 65 million years ago during the late Cretaceous mass extinction event of the Mesozoic Era. The dinosaurs eventually became extinct 65 million years ago when an asteroid hit the Earth.
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The dinosaurs eventually became extinct 65 million years ago when an asteroid hit the Earth.
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How did dinosaurs become extinct?
Multiple extinctions on Earth are inevitable in the evolution of the solar system's environment. >>>More
Location: Yucatan Peninsula, Mexico.
Character: A 10-kilometer-sized meteorite (equivalent to the flight altitude of a jetliner) Plot: It crashes headlong into the sea at a speed of 40 kilometers per second, and then sets off a tsunami of up to 5 kilometers, which triggers a powerful volcanic eruption in the Deccan Plateau and changes the direction of the Earth's tectonic plates. >>>More
Dinosaurs were all extinct from the Late Cretaceous of the Mesozoic Era to the beginning of the Cenozoic Era from 60 million to 70 million years ago.
Extinct, there are dinosaur fossils as evidence.
Dinosaur extinction took placeCretaceousPeriod. >>>More