Why are many of the large organisms on Earth that pose a deadly threat to humanity extinct?

At present, there are creatures with the highest degree of science and technology on the earth, and there is nothing else to think about, it is completely human beings themselves, and there are many high-tech creatures, although they are more powerful than usBut even today, people wonder why many of the large creatures on Earth that pose a deadly threat to humans have become extinct. In fact, it is impossible to adapt to the new environment, after all, resources are limited, the larger the size, the better the offensive power, but the more resources are needed.

First of all, we use the ancient era of the earth's overlord dinosaur to illustrate, this existence is definitely the strongest creature on the earth, whether it is in the past or today, it has a very terrifying volume and distribution, the dinosaur itself tooth biting power can be said to be unparalleled existence, and the size of the lion, tiger and the like is also an invincible existence, such a giant beast is invincible in terms of biology, but the size means that it needs a lot of food energy to provide its own daily enrichment, But in reality, the earth's environment is constantly changing.

The development at this time is undoubtedly a daily decrease in resources, for example, compared with the original deep forest at the beginning and the current deep forest, it is a gap between heaven and earth, so the continuous reduction of resources will directly lead to the inability of these large creatures to adapt to the environment, and the final result is that even the dinosaurs, the former overlords of the earth, have all perished, so it is not necessarily a good thing to be too large, such as a volcanic eruption.

Small animals can run well, their own energy will not be consumed too fast, plus the energy they need is not much, all have more hope of survival, but the size of the very large creatures, at this time although the speed of running is fast, but the speed of consumption is faster, can not replenish energy, directly lead to death, the development of nature is like this, "survival of the fittest", those who do not adapt will be eliminated.

Because in the natural world, the survival of the fittest is based on natural selection, and if there is no way to adapt to the changes in the natural environment, it will become extinct, and the mutated environment will bring unimaginable disasters to animals.

On the one hand, their evolution has not been able to adapt to the environment, and on the other hand, there are human interference factors, which are also one of the main reasons, and many aspects work together, which directly leads to their extinction.

Because these large organisms are no longer able to adapt to the current environment of the earth, many of them are extinct.

First of all, due to changes in the global environment, large animals will become extinct due to the lack of food, and secondly, in the process of human migration, there will be a planned elimination of aggressive large animals.

This is because human beings belong to the higher creatures in nature, with very powerful skills, and many large creatures that pose a fatal threat to human beings have disappeared through some human technologies and the elimination of nature.

Mainly because of the environment, there is also the extinction of organisms, coupled with the continuous decline of sea level, the temperature has dropped, so it will lead to extinction.

In fact, it is a naturally occurring phenomenon, probably because these animals do not adapt to changes in their environment.

No, any wild animal exists to maintain the balance of nature. said"Pests"The extinction without a problem is ridiculous, so-called"harm"refers to a narrow definition of human beings. The mosquitoes are gone.

And what about frogs and spiders that feed on mosquitoes? Mosquitoes are also pollinators, bringing diseases that can screen out other animals, and ecosystems are linked by links.

<> if a link is missing, like dominoes, a string of dominoes will fall. If mosquitoes, a large, widespread keystone animal, become extinct, at least humans will not survive. There must be some assumptions that frog spiders can eat other things, or there are other butterflies and bees pollinating, come on, the niche is not a lump, just take out a piece, a lot of specialized specialized plants, attract a certain animal, such as a certain special aroma, flowers, or a special time or only certain animals can absorb seeds, such as ravens, this relationship is not a minority, in addition, do you really think that bees and butterflies are in a good situation right now?

There is also a concept in the ecosystem called time lag, when an animal goes extinct and there are no immediate consequences.

For example, there were hundreds of millions of guest pigeons, and they thought that was it? American oak trees are widely distributed. Oak trees grow over the years, and every few years they produce a cluster of fruit so that they don't eat it all at once.

The staple food of the guest pigeons is acorns. There is no passenger pigeon, the oak tree bears fruit every year, the fruit is not destroyed by the passenger pigeon, and it is eaten by the brown rat, the brown rat will usher in multiple outbreaks, coupled with the warming climate, the seam rat can migrate to farther and colder places, and the ticks carried by it have an impact on the spread of Lyme disease, which has become one of the common diseases in the United States, and Lyme disease can be fatal when it is severe. It took 80 years for the guest pigeon to be discovered.

Including wild boar outbreaks, why wild boar outbreaks? One of the main reasons for this is the lack of natural predators. Only tigers can control large wild boars.

Predators such as wolves and leopards can only kill a few small wild boars. Again, a niche is not a component.

If you want to move it. The ecosystem has a certain degree of fault tolerance. The more complex the species, the higher the fault tolerance, the more stable, the simpler, and the more prone it is to collapse.

Now the wild boar is killed, haha, the wild boar is an important cornerstone species in the forest, open up the soil, improve the survival rate of seeds, open up the animal path, etc., have you ever thought about what problems will arise when the wild boar does not exist? So now there is a lack of scientific knowledge.

This is not true, because the ecological environment is a large cycle model, although many large organisms are extinct, but there are also some completely alive, such as whales, sharks, these ancient creatures still live in the natural environment and live in peace with humans. And there is no direct relationship between the extinction of large organisms and humans.

It's true, because in today's ecological environment, there are very few large creatures that can pose a deadly threat to humans, and most of them are extinct because of the fact that this type of large creatures need too many survival resources, and because the earth's living environment is constantly changing, they can't survive well.

Yes. A lot of big wild animals are extinct, and humans are killing a lot of animals when they expand the land, and those animals are a certain threat to us.

Yes, it is because people cut down indiscriminately, and then they do not protect the environment, which leads to the destruction of the environment is particularly serious, so it also leads to the breakage of biological chains, and the global warming climate has become more serious.

Probably not, human beings also want to maintain the balance of nature, if you kill some animals, nature is not particularly balanced, they should die in the process of evolution without much competitiveness.

Probably not, it may be that in the development of nature, these creatures have not evolved well, so they will slowly become extinct.

The most typical example of the extinction of large organisms is the dinosaur, which is caused by the sudden changes in the environment of the living environment.

There must be dinosaurs on Earth, mammoths and other animals are extinct. It may be due to climate change, or it may be glaciers, and other reasons are now under investigation, all of which are unknown, and the good thing is only reliability.

There is no good or evil in things, and if you pass it, it will be a disaster! The extinction of the dinosaurs was due to the extinction of asteroids hitting the Earth, the extinction of woolly rhinos and mammoths, probably because the air in the Arctic was too clean! And because they have hair on their bodies, they don't need to migrate!

The best example of this is the dinosaurs, which became extinct when an asteroid hit the Pacific Ocean.

The largest extinction event was the "Dinosaur Extinction Event", which occurred 65 million years ago in the late Cretaceous period. Scientists believe that the extinction event was caused by a huge alien impact on Earth with more energy than a million atomic bombs. The extinction event led to the extinction of about 80% of all species on Earth, and the dinosaurs also fell victim to this extinction event.

Plutozoic Cryptozoic Era 4570 Earth Emergence Proterozoic Era 4150 First living --- bacteria appeared on Earth Dionysian Era 3950 Archaea Emergence Early Rain Sea Era 3850 Oceans and other waters appeared on Earth Archean Archean Archean 3800 Paleoarchan 3600 Blue-green algae occurrence Middle Archean 3200 Neo-Archean 2800 First Ice Age Proterozoic Iron Formation 2500 Strandic Invasion 2300 Orogenic 2050 Paleoproterozoic Consolidation 1800 Caprock 1600 Extension 1400 Mesoproterozoic Narrow Belt 1200 Stretching 1000 Rodinia Paleocontinental Formation Glacogenic 850 Snowball Occurrence Neoproterozoic Ediacaran 630 +5 -30 Multicellular Occurrence Phanerozoic Paleozoic Cambrian Cambrian Explosion of Life Ordovician Fish Occurrence; Marine algae flourish Silurian Occurrence of terrestrial naked ferns Devonian Fish boom Amphibian emergence Insects Emergence of seed plants Occurrence of stone pine and horsetail Carboniferous Insect flourishing Emergence of reptiles Coal forest Gymnosperms Emergence of reptiles Mesozoic Permian Permian extinction event, extinction of 95% of life on Earth Pangea formation Triassic Dinosaur occurrence Oviparous mammal emergence Jurassic Marsupial mammal emergence Bird emergence Gymnosperm boom Angiosperm emergence Cretaceous Flourishing and extinction of dinosaurs Cretaceous-Tertiary extinction event, 45% of life on Earth extinct Mammals with placenta appeared Cenozoic to the present Unit: million years.

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