Did the impact of the meteorite or the increase in the earth's gravity destroy the dinosaurs?
Did the extinction of the dinosaurs result from a meteorite impact or increased gravity?
National Geographic :""You probably grew up learning that it was an asteroid that ended the dinosaurs 66 million years ago, slamming into prehistoric Central America.But what has long perplexed scientists is where exactly in the universe the more than 6-mile-wide asteroid came from.New geological analysis has revealed a key metal, ruthenium, in layers of the Earth that correspond to the timing of the asteroid’s impact, shedding new light on the kind of asteroid it likely was—and where it came from.""
Ramin: Assume that the big meteorite collide the earth 65 million years ago and declined the big dinosaurs. Why the remained small reptiles couldn’t get bigger again. The earliest reptiles which were amphibious were very small but they could get bigger and made the dinosaurs. Then it becomes clear that the factor which caused them to extinction is still remained and doesn’t allow today reptiles to get bigger. So the collision of the big meteorite with earth and the formation of dust can not be supposed as the factor of dinosaurs decline because that collision occurred at that time and the effect of dust and smoke have been disappeared and there was no later effect on animals. The theory of the increasing of the gravity says by increasing of the gravity the ability of blood system of these animals decreased gradually. So animals which had weaker blood system become smaller or extinct. Scientists think that the decline factor which was the big meteorite collided at the time and everything is finished and they can form new giant animals. These scientist are unaware that they don't as far the gravity of earth is like the gravity this time it is impossible to revival such giant animals.
Mathew Morton : this doesnt really make any sens,e for a number of reasons. It is important to mow that many types of megafauna did evolve after the extinction of the dinosaurs, but that evolution isnt a goal set thing, so there wont always be an impetus ot get bigger.Plus how does a 'gravity increasing' model for the development of dinosaur body sizes account for the initial development of large dinosaurs circa the Triassic period?
Ramin: The size and height of animals is directly related to the strength of the circulatory system. The circulatory system must have enough power to resist the gravity of the earth and be able to bring the blood to a high height (head). Today, the largest animals are classified as mammals (four-chambered hearts with closed circulatory system). As the Earth's gravity gradually increased over time, animals were forced to invent a stronger circulatory system (in the process of evolution). During the Triassic period, animals in the category of reptiles invented a three-chambered heart (a stronger circulatory system than before) and were able to increase their size with its help. Which eventually led to the emergence of giant dinosaurs. With the gradual increase in Earth's gravity, reptiles (three-chambered hearts) lost the power to resist gravity and were forced to retreat (their sizes gradually be smaller).
Later, vertebrates were able to invent four-chambered hearts, and with its help they became larger again (megaphone mammals), which eventually emerged as the largest land mammals (Baluchitherium). ?As the Earth's gravity gradually increased, mammals also failed and were forced to reduce their size, thus giving rise to today's mammals. This chase continues between the animals and the gravity of the earth. In the future, today's mammals will be much smaller. Vertebrates are always trying and evolving. In the future, vertebrates will invent a more powerful circulatory system and become larger again, they will be a new class of vertebrates.
..............................................
Mathew Morton : Can I ask, why do you think the earth gravity is increasing? Would there be effects of this everywhere?
Ramin : You, why do?think the meteorite hit the Earth?Because you are looking for a reason for the extinction of the dinosaurs.But this meteorite hypothesis does not convince me, because it cannot answer many questions."Increasing of Earth's gravity theory" can give a logical answer to many of today's unanswered questions.
........
Question: Necessity always leads to invention. Animals with use of three-chambered hearts have been dinosaur-size in the Jurassic. Why did animals need to invent four-chambered hearts after that?"The theory of increased gravity of the earth" answer: because after that, the gravity increased and the animals needed a more advanced circulatory system to overcome it. For this reason, four-chambered hearts were invented.The meteorite hypothesis has no answer.
.........
Question: Why can't a giraffe reach the height of a sauropod, today? "The theory of increased gravity of the earth" answer: Because the maximum height of animals is determined by the amount of gravity of the earth and the amount of air pressure. As the maximum height of the liquid in the Torricelli tube depends on the amount of air pressure, the amount of gravity and the density of the liquid. In the same way, the maximum height of blood in the body of animals (height of animals), according to the amount of air pressure, the amount of gravity and the density of blood.The meteorite hypothesis has no answer.
.......
And very other questions.
.......