What did Darwin s On the Origin of Species advocate and what did it oppose?

The doctrine of natural selection, genetic variation, natural selection, survival of the fittest, survival of the fittest.

Darwin's "Origin of Species" advocates natural selection, the theory of species evolution, and advocates that species are the choice of environment in nature, and species will continue to evolve.

It includes four main ideas: the general theory of evolution, the doctrine of common ancestors, the doctrine of natural selection, and the theory of gradual change. The doctrine of natural selection, on the other hand, includes four perspectives: overbreeding, competition for survival, heredity and variation, and survival of the fittest.

Darwin, in his book "The Origin of Species", put forward the idea that natural selection is natural selection, and the survival of the fittest.

The Doctrine of Natural Selection, Genetic Variation, Overbreeding, The Struggle for Survival, The Survival of the Fittest.

Species evolved from lower species.

For example, man evolved from forest apes!

In this book, Darwin clearly put forward the idea of "evolution", showing that species are constantly changing, from the lower to the higher, from the simple to the complex. Genetic variation, the struggle for survival, and the doctrine of natural selection are the main contents of the book "On the Origin of Species". Natural selection, survival of the fittest.

c In fact, the natural environment has a selective effect on biological evolution.

One. Evolutionary theory: species are changeable, existing species are changed from other species, and one species can become a new species. This has long been understood by biogeography, comparative anatomy, comparative embryology, and paleogenesis.

Observations and experiments in disciplines such as physics and molecular biology have confirmed that the emergence of new species can be directly observed even in the laboratory and in the wild. So, this is a scientific fact that is as reliable as "the earth is round".

Matter is made up of atoms". Today, with the exception of a few who ignore the facts because of religious fanaticism, there are practically no biologists who deny the fact of biological evolution.

Two. Common Ancestor Doctrine: All living things come from a common ancestor.

Molecular biology discovered that all living things use the same set of genetic code, and biochemistry revealed a high degree of consistency at the molecular level, which ultimately confirmed Darwin's vision. So, this is also a generally accepted scientific fact.

Three. The Doctrine of Natural Selection: Natural selection is the primary mechanism of evolution. The existence of natural selection has been confirmed by countless observations and experiments, which is also a scientific fact.

Four. Gradual change: The pace of biological evolution is gradual, it is a gradual improvement process of accumulation of small dominant variations under the action of natural selection, rather than a leap. This is one of the more controversial parts of Darwin's theory of evolution.

Is this question difficult?

Isn't it c?

The Doctrine of Natural Selection.

Genetic variation; overbreeding; Natural selection, survival of the fittest, survival of the fittest.

In On the Origin of Species, Darwin argues for the ideas of "heredity", "variation", and "natural selection, survival of the fittest" with countless detailed information and rigorous logical reasoning. Based on a large number of observations, experimental results, and geological research materials, Darwin came to two conclusions: one is that species mutate during the process of reproduction and reproduction from generation to generation.

Most of the characteristics of the parents will be inherited to the offspring, but the offspring and the parents are not exactly the same, but there are differences, that is, the offspring have changes in the inheritance of the ancestors, and the generations are like this, accumulating a lot, causing a change in the type of organism, and this change is a gradual evolutionary process, the past organisms are very different from the existing organisms but related. The second is that the extinction of old species and the emergence of new species are the result of natural selection. All living things must fight for survival and reproduction, and this is the struggle for survival.

The first is the struggle between organisms and the natural environment and climatic conditions; The second is the struggle between organisms for survival resources, and the result of the struggle is "natural selection, survival of the fittest", the elimination of old species, and the emergence of new species. The survival and reproduction of organisms must follow the law of natural selection, and due to the differentiation of organ functions and the complexity of living conditions, organisms will inevitably lead to progressive development under the long-term effect of natural selection, and will inevitably lead to the development from low to high, from simple to complex. Human beings, like other living things, are the product of a long process of natural selection, not a creation by God.

This theory shook the world like a volcanic eruption.