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In the Cretaceous era, this crocodile already existed, but the dinosaurs of the same period as the crocodile were extinct, and many people did not understand how they avoided these disasters, nowadays, people breed crocodiles by raising them, so it can be seen that crocodiles are very adaptable to the environment and reproduce, so they survive due to their strong reproductive capacity, and secondly, the previous crocodiles had almost no natural predators, crocodiles are amphibian cold-blooded animals that are good at hiding their prey in the water.
And when disaster comes, the creatures in the water suffer much less damage than the terrestrial creatures, and they are good at avoiding these disasters when volcanic eruptions or **, according to records, there are more than 20 species of crocodiles in the world, Chinese alligators, Southeast Asian alligators and African Nile alligators are all famous species, and the largest crocodile breeding base in China is Guangzhou Panyu Farm, which covers an area of nearly 70 hectares and has nearly 100,000 crocodiles such as crocodiles and Nile crocodiles.
South American alligators and alligators, the crocodile is an ectothermic, an elliptical animal, because the crocodile is a precious reptile, so in addition to the existing crocodiles, there are also ancient giant apex carnivores on the earth, such as the Prussian crocodile, the imperial crocodile, the dreaded crocodile and the Barinas crocodile, and because the crocodile is obviously an ordinary fish, but a reptile, it is named the crocodile because it plays in the water like a fish.
Moreover, it is also believed that the higher the position in the food chain, the more fierce the competition, the more frequent the species change, and the dinosaurs were in this position, so they also faced more competitive pressure, although the crocodile is also a carnivore, it uses ambushes and predators in lakes and rivers, while mammals and predators run fast on land to preach, this is not enough for the two sides to compete, and some early land alligators were defeated in the competition with mammals and became extinct in the early days.
The question of how the crocodile survived to this day has existed since the time of the dinosaurs, and it will be explained here today.
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It is better to survive by constantly adapting to changes in the environment, the crocodile's ** is formed to protect itself from injury, and the crocodile grows slowly in order to cope with food shortages.
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Not only crocodiles, but also many species have survived to this day, and they are very adaptable to the environment and can survive.
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Because the crocodile was not extinct during the dinosaur period, it gradually evolved and multiplied in the later period, and finally lived into the 22nd century.
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Crocodiles have a strong ability to adapt to the environment and reproduce, so they survive because of this, and secondly, crocodiles have few natural predators.
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The crocodile lives in the deep sea, and the environment it is in is relatively good, it has not been attacked by all kinds of attacks, and its survivability is also relatively strong, so it can survive until now.
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Because the metabolic rate of crocodiles is relatively low, crocodiles have to eat some organisms to survive, and crocodiles can adapt to any living environment.
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Mainly because crocodiles have always lived underwater, and crocodiles do not have any damage to us humans, and are generally far away from our human lives, so they can live until now, and they are also adapted to the current living environment.
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Because the vitality of crocodiles is particularly tenacious, and crocodiles are also easy to adapt to the living environment, so they can always survive.
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Because crocodiles are mainly distributed in swamps, lakes, rivers and mountain streams and other humid areas, for large carnivores, it is difficult to obtain sufficient food in this environment, and even if there is sufficient food, it is often discontinuous, and during this period, crocodiles have evolved a unique ability - extremely low metabolic rate, crocodiles themselves are a temperature-changing reptiles, which means that they only need less energy to maintain their physiology, and on this basis, a very low metabolic rate, It gives the crocodile a strong anti-starvation ability.
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Crocodiles have now adapted to the development of the earth and have evolved, so they have been able to live until now.
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There should be no accurate data on the number, and the longest should be the bay crocodile, which can reach 7 meters in length (it has been caught in meters).
The ancestors of crocodiles did exist in the age of dinosaurs. However, the "extinction of the dinosaurs" is still a speculation, although there is some evidence, but the actual situation should be under the influence of some mysterious force (most people believe that it was a small nova hitting the earth), the earth's environment has changed dramatically, resulting in a large number of deaths of larger and simpler species.
Reptiles, mammals, and birds, which are relatively small in size and eat more types of food, have a better chance of surviving and continuing to evolve.
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Natural selection, survival of the fittest!
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Because crocodiles are small and not stupid.
Crocodiles are not descendants of dinosaurs (crocodiles appeared in the Mesozoic era from the Triassic to the Cretaceous, and were contemporaneous animals with dinosaurs, and the similarity may only be due to the influence of the bad environment of the times, so they are not considered descendants of dinosaurs in terms of origin), such as horned crocodiles are herbivorous creatures that lived in the late Triassic, and ground crocodiles are carnivorous creatures that lived in the middle of the Jurassic, all of which lived in the same era as dinosaurs.
There is no such dinosaur at the moment, and no dinosaur can be stronger than a Tyrannosaurus rex in its heydayCretaceous. >>>More
A: The dinosaurs died out between 7,000 and 100 million years ago.
Dinosaurs have lived on Earth for more than 185 million years.