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The intrinsic form is genetic diversity, i.e., genetic diversity.
The external forms are species diversity and ecological diversity.
These three kinds of diversity make up biological diversity.
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In the course of the evolution of life on earth, we will come into contact with all kinds of strange animals, plants, and microorganisms. According to experts, we already know more than 2 million species of living things on the planet to date. It is said that there are 13 million or more species on Earth.
We will feel a heartfelt joy at the sight of the earth, where all things are together, vibrant, and thriving. At the same time, there are some questions: why are there so many kinds of biological species on the earth?
How did those strange creatures come about? What is the reason for the diversity of life on Earth? Many experts and scholars have studied and ** this.
Some analyze from the perspective of genetics, believing that the diversity of species is caused by genetic variation; From the perspective of ecology, some believe that the diversity of species is caused by "adaptive radiation" formed by environmental transformation. And so on, there is some truth in all kinds of statements.
My view is that organic matter is the material basis and form of biological production. All life forms on Earth contain components of organic compounds. In other words, all plants and animals on the planet are mutated organic compounds, all variants of some kind of carbohydrate.
All kinds of living things are organic objects, and they must operate according to the structure and form of organic objects.
And when we come into contact with a variety of organic matter, we will find that the number of organic matter is as large as tens of millions. Because the carbon atoms of organic compounds are very strong in their binding capacity, they can combine with each other to form carbon chains or carbon rings. The number of carbon atoms can be one, thousands, or tens of thousands.
Many organic polymer compounds can even have hundreds of thousands of carbon atoms. In addition, the phenomenon of "isomerism" in organic compounds is very common. The so-called isomerism refers to chemical compounds with the same chemical formula, the same chemical bonds, but different atomic arrangements.
It's like the same parents will give birth to children of different shapes and heights.
Doesn't this just explain one reason for the diversity of life on Earth? Because, all kinds of living things on the earth can be said to be the products of organic compounds, and the structure and formation of organic compounds are diverse. Even if the genes do not change and the ecological environment is not changed, organisms will form a variety of species when they are organically combined.
In conclusion, there are many reasons for biological diversity, and the diversity of organic compounds can be said to be one of the important reasons.
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There are both natural and anthropogenic causes of biodiversity loss. Human activities are the most important cause of biodiversity loss.
Natural causes: 1. The biological characteristics of the species themselves, the formation and extinction of species is a natural process; Species have poor adaptability to the environment, or variability and adaptability, and are difficult to adapt to when the environment changes greatly, so they are in danger of extinction;
2. Natural disasters due to sudden environmental changes.
Anthropogenic causes: 1. Insufficient understanding of the importance of biodiversity to human beings, too much attention to economic development, and weak awareness of the protection of pure biological diversity;
2. The development of biological resources is excessive, and some of them are even predatory and quiet;
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Biodiversity is the diversity of living organisms and their living environments; To be precise, biodiversity includes all plants, animals and microorganisms on Earth, as well as all the genes and diverse ecosystems they possess. Biodiversity reflects the number, species and differences of the Earth's ant-sensitive organisms, and how these characteristics change over time and space. Biodiversity includes diversity within species, diversity between species, and diversity between ecosystems.
And coincidentally, the causes of biodiversity have the absolute key:
Root cause: the diversity of genetic material, the traits of organisms are controlled by genes.
Direct cause: the result of the selection of various traits of organisms by the changing environment, the theory of natural selection says that 'the survival of the fittest, the adaptation of organisms to the environment directly affects the survival of organisms, the survival of the fittest, and the elimination of the unsuitable.
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Biodiversity is the ecological complex formed by organisms and their environment, and the various ecological processes associated with it, including animals, plants, microorganisms and the genes they possess, as well as the complex ecosystems formed by them and their living environment".
Biodiversity refers to the ecological complex formed by organisms and their environment, including animals, plants, microorganisms and their genes, as well as the complex ecosystems formed by them and their living environment. Biodiversity generally includes three components: genetic diversity, species diversity, and ecosystem diversity.
Species diversity refers to the richness of animals, plants, microorganisms and other biological species on the earth, both the richness of species in a certain area and the uniformity of species distribution, which is an objective indicator to measure the richness of biological resources in a region.
Wildlife reserves, which cover 15% of the world's land area, are threatened and biodiversity is reduced.
Returning farmland to forests, refraining from indiscriminate logging, planting trees and grasses, establishing nature reserves, and prohibiting the killing of endangered animals. >>>More
Biodiversity conservation has become a widely accepted goal for environmentalists, but there is no consensus on why it is important. The two opposing theories of natural value – here referred to as "economism" and "intrinsic axiology" – are often cited in support of this goal. Environmentalists have recently proposed a universal "Earth Charter" to express humanity's shared values derived from nature, citing both theories in support of biodiversity conservation. >>>More
First, the loss and fragmentation of biological habitats, the reclamation and expansion of land by humans, the area of undisturbed natural habitats has been drastically reduced and fragmented, and environmental pollution and climate change have also caused the disappearance of species. >>>More
Learn about biodiversity in 3 minutes.