Why is it that human reproduction is so slow and so laborious, but not extinct?

First of all, we have to ask, is this question valid?

You say that people are slow to reproduce, but in fact, this is a comparison, since the comparison, it depends on what your reference object is.

If you are referring to fish, frogs, which lay tens of thousands of eggs at a time and reproduce hundreds of millions of organisms that can develop in a few months, human reproduction is indeed slow and laborious. <>

But if you're referring to large mammals, such as whales, elephants, then you'll find that humans are not slow to reproduce.

For example, a blue whale is 12 months pregnant, which is longer than a human.

Another example is that elephants are cattle, and the pregnancy time is 22 months, which is equivalent to 2 years.

The most bullish is the frilled shark, which is said to be 42 months pregnant, and what a concept, almost 3 and a half years.

So the problem arises, since human pregnancy is not the longest, nor is it the shortest, naturally there is no need to worry about this problem.

In fact, in the biological world, there are at least two ways of thinking in the field of reproduction to gain a competitive advantage in species. The first idea is called r countermeasures, and the typical characteristics are high fertility, rapid development, precocious puberty, individuals are generally relatively small, and the life span is often relatively short, such as the fish we mentioned is typical. But one of the problems with this strategy is the low survival rate, for example, the caviar we eat on the table is their next generation.

The second way of thinking is called the K strategy, in which organisms choose the opposite idea, with lower fertility, larger individuals, and slower development, but a long lifespan. And one advantage of this strategy is the high survival rate.

In this case, each has its own merits, so the eagle strikes the sky, the fish soars to the shallow bottom, and all kinds of frost compete freely.

Because human beings are one. Dot. All.

No. Weak. Yes.

You say that the fertility rate is low, but in fact, the candidates who have the opportunity to compete with human beings are not much better; You say that it is easy to die young, but human beings are already very good in their kind in raising offspring, and as social animals, there is reproductive cooperation in human groups, and this way of others helping to take care of offspring has also improved the survival ability of human offspring a lot, and the offspring of other animals have died more; You say that the development time is long, it is because the human brain is willful and collectively premature, and the intellectual advantage after development offsets the disadvantage in time; You say humans are inflexible, and you ask chimpanzees to type me a hundred words a second! You let the monkey throw a javelin and see! So in fact, human beings are still quite strong, and with the opportunity of some times, it is logical to develop civilization.

Because human beings evolved from apes and went through a step-by-step advanced degeneration and were not extinct, it is not that human reproduction is so slow that they have not been extinct.

There is no need to discuss this issue, because human beings have thoughts, and they have the highest wisdom, and they can use their big toes.

It's not a matter of time, what's the hurry. When the time comes, you can't do it if you don't want to be extinct, but it doesn't matter if you give it to us when the time comes

The human fetus has a large head, and it is one of the few species that needs the same kind of assistance during childbirth, and this is precisely considered to be a ** of human sociality. Social collaboration can better protect oneself, future generations, and sustainable populations.

The strength of an individual is limited, regardless of the time and species. The human evolutionary brain has flourished, but the short-term exercise ability, strength, and gastrointestinal function have been weakened, all because the brain consumes a lot of energy. Humans lack individual strength, but a group of people can face mammoths, and the social and cooperative nature of humans allows humans to deal with many crises.

Thanks to a thriving brain, humans can observe the natural world and draw strength from it, and the tools are becoming more and more sophisticated, sharper and tougher, and can easily break the ** of the beast; The application of fire is to make human beings stride forward, and the animals that can apply tools, in addition to humans, there are also primates such as gorillas, but as long as human beings have the courage to get close to fire, take fire, and apply fire. The use of fire has also contributed to the socialization of human beings, as it can keep warm, drive away wild beasts, and, more importantly, grill food.

There is a great deal of anatomical evidence that the function of the human digestive system has been weakened from time to time by the evolution of the brain. The food that has been grilled by the fire is more likely to be shredded, and human beings no longer have to spend a lot of time biting raw meat, and have more time to observe the world and communicate with each other. The speed of reproduction is only a characteristic of the species, each species is different, and we will find that the more advanced the species, the slower and more laborious the reproduction!

To a certain extent, this is also the law of nature, an inevitable choice in the process of species evolution! Since higher species, such as humans, have a high demand for resources, what would happen if humans had the ability to reproduce like fish and even bacteria?

It is likely that the vast majority of people have to face a harsh ideal: death. Not an active natural death, but a passive death!

The speed of human reproduction and reproduction is not directly related to whether human beings are extinct, and the way of human reproduction is viviparous, and most viviparous organisms are so laborious; The reason why human beings are not extinct is because human beings have made continuous progress in social survival, learned various survival skills, and produced their own civilization.

I don't think the reason for extinction is that humans are at the top of the food chain; There is no other creature that can restrain the development of human beings, the spiritual culture, all kinds of civilizations are well developed, and the brain is very intelligent.

When it comes to the rate of reproduction, animals can be regarded as the first, and the offspring of animals at the top of the food chain are not all healthy growth. According to scientific research, about 50% of the offspring of lions die, and even when lions are adults, they have a high chance of dying while hunting or wandering. And the rate of human reproduction is not fast, and a large part of the reason is that the cost of raising a child is too great now.

Humans have long been in the position of "rulers", and with the continuous progress of humans, wild animals have hardly threatened the safety of humans, and with the advancement of medical treatment, the mortality rate of human diseases has been decreasing, which has led to a huge increase in the population. An increase in population means an increase in the consumption of resources, which is not good for human development. Therefore, in the absence of natural predators and limited resources, human beings reduce fertility to achieve balance.

In fact, the rate of reproduction of wild animals has led to the extinction of species, mainly because they are in a complete ecological chain, maintained by stable populations of various animals. The number of a species begins to decline significantly and is on the verge of extinction. Humans are not in the natural food chain, and the animals that feed on humans are extinct or hiding away from areas of human activity.

In addition, there are few external factors that can limit the size of the population. Thirdly, if people still maintain the ancient rate of reproduction, the depletion of resources will be accelerated and overcrowded, which is not conducive to the development and survival of human beings. As a result, humans have found a way to maintain population numbers by reducing the rate of reproduction, or "family planning".

In fact, there is nothing wrong with human reproduction, but human beings themselves reduce the rate of reproduction because they are at the top of the food chain and there is no other organism that can limit human development to change. This change is followed by the majority of people, so humanity does not become extinct. However, now that the pressure of raising children is even greater, many people are again reducing the rate of reproduction, and if this continues for a long time, this is bound to have a great impact on the development of humanity.

Because human beings are very intelligent, and this world is also very suitable for human survival, it is also because human beings have been slowly progressing and quietly changing, so they have not become extinct.

This is because humans can reproduce after mating, and their ability to reproduce is also very strong, so there is no fear of extinction.

Because the number of human beings is very large, the diversity of genes has not been affected, so there is no such concern.

The main reason why human reproduction is so slow is that the physiological structure and system of human beings are different from those of animals themselves, animals have four legs, and humans have two legs, so there are many differences.

Because human beings are highly intelligent creatures, human reproduction is so slow and laborious. And animals don't have intelligence, so animal reproduction is very simple.

Human beings are higher animals, and their physique is also relatively fragile and very special. Human production requires a long time to raise a fetus, and it is also very troublesome when giving birth. Animals are different, and having children is as you like.

Because human evolution is relatively balanced, the number is larger than ours, and the size and strength are not as large as ours; Those who are greater in size and strength than we are are not as wise as we are; The wisdom is higher than ours, which has not yet been discovered on earth.

Because humans live longer than animals, and people protect themselves by making tools and houses, the environment is much safer than animals, and it is not easy to go extinct.

Humans are the most advanced creatures in the world, known as advanced animals, and the process of reproduction for humans is very slow and laborious. Then people are more confusedThe human reproductive system is so slow and so strenuous that why is it not extinct? In fact, the reason is very simple, although the process of human promotion is very slow and laborious, it can lead to extinction for individuals and small groups, but for those animals, the human reproductive process is relatively fast.

The first reason is that humans are good at using tools, and when they are in the wild, they can protect themselves and improve their survival rate, the second reason is that humans are good at teamwork, and the third reason is that human babies have stronger vitality and survival rate than other animals.

In my opinion, one of the most important reasons is that our human population is so large and has a huge base, even if the mortality rate is averaged every day, our population is still growing; Another is that the acceleration of reproduction is very fast.

It is true that the speed of human reproduction is not as fast as that of other organisms on the earth, but human beings are advanced intelligent creatures on the earth, so there will be no extinction.

Because humans have advanced intelligence and are very capable of surviving, humans will not become extinct.

Among the living organisms, there are many simple, lower organisms that have not become extinct in the process of evolution, and are still very widely distributed, why?

Because humans have the intelligence to use all available resources to protect themselves, they will not become extinct in evolution.

Because humans have intelligence, which is a characteristic that strange creatures do not have, and mammals are very laborious to reproduce, and there are not many extinctions, because their environment is relatively stable and there are fewer natural predators.

Because there is no direct relationship between slow reproduction, exertion and extinction, human beings did not become extinct in the end, because human beings are the most advanced animals, learned the laws of social survival, and sought survival in nature.

In the process of evolution, the whole person gradually frees his hands, and his intelligence continues to evolve, the survival rate of human beings is high, the natural reproduction rate will be relatively high, and the survival experience of human beings can be passed down from generation to generation, so that the generation is stronger than the next, making up for the shortcomings of slow and laborious human reproduction.

Humans have a high level of intelligence and are able to use their surroundings to create conditions conducive to their own growth.

The survival and development of our current human beings is very fast, in the past, it was about a few years, and the number of human beings on our earth at that time was only about 6 billion, but by this year, the number of human beings on the earth has soared to about 7 billion, and it cannot be seen that the population growth rate of human beings is still very fast. It took about 1 billion people about a decade or so, and this was only possible when the population growth rate in developed countries was negative. So the rate of human reproduction is very slow, why are there still human beings alive?

The main reasons for this are as follows. <>

1. The rate of human reproduction, which is compared with other animals. First of all, the first point is about the rate of human life, compared with other animals, our human reproductive rate is indeed a slower existence, we can basically have a few children in a lifetime, about 2 or 3. And there are some people who only have one child at all or do not have children, and there are many people.

Compared with other animals, for example, dogs can give birth to 20 to 30 puppies in more than ten years of life, and it cannot be seen how huge the production of dogs is. <>

Second, the human population base is large. Secondly, the second point is that the population base of human beings today is very large. We now have about 7 billion human beings, otherwise we can see that our population base is still very huge, in the entire animal world, there are basically only ants and other tiny creatures, and the number of fish can be compared to our humans, and the number of other mammals is basically not as large as that of human species.

3. The life expectancy of human beings is very long. The last point is that our human life expectancy has been extended to the level of nearly 80 years or so. In the last thirties and forties, the life expectancy of human beings was only about 40 years old, and it has developed for a few decades or so, and now the life expectancy of human beings has nearly doubled to a level, otherwise we can see how rapid the changes of our human beings are.