Various species, whether bacteria, worms, mites, lizards or small mammals, play an important role in maintaining the balance of the ecosystem. They provide us with food, fresh air, adjust the climate and control the epidemic of diseases. Their role is irreplaceable by other species.
Every living thing has its own unique genetic characteristics, which enables it to adapt to certain environmental conditions. This genetic feature is very important to us human beings. If we make use of it, it will bring us great benefits.
In order to improve varieties, humans have to find similar species from wild species and implant their unique genes into crops planted by humans. This can not only change the ability of crops to resist natural disasters, but also greatly improve the yield and quality of crops.
Various wild species also provide us with a large number of medicinal materials. Many medicinal materials for human beings come from wild animals and plants, such as morphine and cocaine, and quinine for malaria comes from poppy plants, cocoa trees and cinchona trees respectively. On the one hand, these medicinal plants have played a life-saving role, on the other hand, they have also brought great economic benefits to the pharmaceutical industry.
Wild species have also made special contributions to the development of modern science and technology. Many inventions are inspired by biology. People learn many things that are beneficial to human beings from the living habits and activities of birds, animals and insects, and imitate and manufacture corresponding products to serve human beings. In addition, wild species also provide us with rich tourism resources, which is also a huge wealth.
Therefore, the protection of biodiversity and the sustainable utilization of biological resources are of inestimable significance to the whole world.
Extended data
Biodiversity usually includes genetic diversity, species diversity and ecosystem diversity. ?
1, genetic diversity
Genetic diversity is an important part of biodiversity. Genetic diversity in a broad sense refers to the sum of all kinds of genetic information carried by organisms on earth. These genetic information are stored in the genes of individual organisms.
So genetic diversity is also the genetic diversity of organisms. Any species or individual organism holds a large number of genetic genes, so it can be regarded as a gene pool. The more genes a species contains, the stronger its adaptability to the environment. Gene diversity is the basis of life evolution and species differentiation.
2. Species diversity
This is the core of biodiversity. Species are the basic unit of biological classification. What is a species has always been discussed by taxonomists and phylogenetic chemists. Meyer (1953) thinks that species are groups that can (or may) reproduce with each other and have natural populations, and these groups are reproductive isolated from other groups.
3. Ecosystem diversity
Ecosystem is a natural synthesis of all kinds of living things and their surroundings. All species are part of the ecosystem. In the ecosystem, not only species depend on each other and restrict each other, but also organisms interact with various environmental factors around them.
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