Question

What is responsible for disappearing dinosaurs?​

Answer 1

Ответ:

Объяснение:

Evidence suggests an asteroid impact was the main culprit. Volcanic eruptions that caused large-scale climate change may also have been involved, together with more gradual changes to Earth's climate that happened over millions of years

Answer 2

The disappearance of the dinosaurs, which occurred about 65 million years ago at the end of the Cretaceous period, is widely believed to have been caused by a combination of catastrophic events. The leading hypothesis is that a cataclysmic event, or series of events, led to the mass extinction of the non-avian dinosaurs. The two main factors implicated in the disappearance of the dinosaurs are:

1. Asteroid Impact: The most widely accepted theory is the asteroid impact hypothesis. It suggests that a massive asteroid or comet, estimated to be around 10 kilometers (6 miles) in diameter, struck the Earth near what is now the Yucatán Peninsula in Mexico. This impact would have released an enormous amount of energy, causing massive fires, a "nuclear winter" effect due to the injection of dust and debris into the atmosphere, and a subsequent drop in global temperatures. The resulting environmental disruptions would have made it extremely difficult for many species, including the dinosaurs, to survive.

2. Volcanic Activity: Some scientists propose that in addition to the asteroid impact, intense volcanic activity in what is now the Deccan Traps region of India contributed to the mass extinction event. These volcanic eruptions would have released large amounts of gases and ash into the atmosphere, leading to environmental changes, including acid rain and further cooling of the planet. This prolonged period of volcanic activity may have added stress to ecosystems already affected by the asteroid impact.

It's important to note that these two factors are not mutually exclusive, and they may have interacted in complex ways to exacerbate the environmental changes and mass extinction event. This event marked the end of the Mesozoic Era and led to the rise of mammals and eventually the evolution of birds from small theropod dinosaurs.

The combination of the asteroid impact and volcanic activity is believed to have caused dramatic and rapid environmental changes, including severe temperature fluctuations, reduced sunlight, and disruptions to the food chain, which ultimately led to the extinction of many species, including the non-avian dinosaurs. This event is known as the Cretaceous-Paleogene (K-Pg) extinction event and is a critical event in Earth's history.