Methods of explanation of biological invaders and their role

Illustrative methods are used: list numbers, give examples, make analogies, etc.

Clear: 1Column numbers, such as "Since World War II, 9 out of 11 local birds have been exterminated by palm tree snakes, and the number of the last two birds is also declining, and there is a danger of extinction at any time".

2.For example, "In the case of fresh fruits and vegetables in the world**, for example, many insects and insect eggs are attached to these caravans, including extremely harmful pests such as the Mediterranean fruit fly." ”

3.For example, the "biological invaders" are compared to the "immigrants" ......The purpose of using various explanatory methods is to better explain the characteristics of things, so that readers can understand more specifically the harm caused by "biological invaders" to human society.

List numbers, make analogies, give examples, (there are exercises for language books).

Illustrative methods are used: list numbers, give examples, make analogies, etc.

Ming Pei Zheng stool is true:

1.Numbers, such as "Since World War II, 9 out of 11 local birds have been wiped out by palm serpents, and the number of the last two birds is also declining day by day, and there is a danger of extinction at any time."

2.For example, "In the case of fresh fruits and vegetables**, many insects and insect eggs are attached to these goods, including extremely harmful pests such as the Mediterranean fruit fly." ”

3.For example, "biological invaders" are compared to "immigrants......".The purpose of using various explanatory methods is to better explain the characteristics of things, so that readers can understand more specifically the harm caused by "biological invaders" to human society.

Routes: Mainly human activities, such as importing and exporting fruits, artificially carrying pets, flowers and plants, etc.

Features...In the context of internationalization, the genus of convenience.

Traffic, which inevitably leads to the intersection of species that would otherwise not intersect. It's hard to put an end to it.

Hazards: Once the environment is suitable, alien species breed because they have no natural predators, breaking the original food chain and bringing catastrophic harm to the local ecosystem.

Prevention and control methods: 1Enhance people's awareness of ecological defense. Some people don't know how powerful alien species are, and think it's nothing. Therefore, it is extremely important to strengthen the awareness of ecological defense.

2.For my use. Invasive species can be exploited, such as using water hyacinth as feed for pigs.

3.Hunting and killing. Don't show mercy, kill if you meet!!

For example, the famous Brazilian tortoise, as an invasive species, everyone can raise it, but don't release it! (I've seen others release Brazilian tortoises with my own eyes) Don't be merciful, the invading creatures should be wiped out.

4.Biocontrol. Introducing natural enemies from the place of origin of invasive species. This method works wonders, but it is also very dangerous and requires a rigorous analysis of its feasibility. After all, they are all invasive species, and if they fail to be introduced, they will add fuel to the fire, quench their thirst, and 、......kill themselves

The following five explanations were used:

Column numbers. For example, "from World War II to the present, the number of local species of birds has been wiped out by palm tree snakes, and the number of the only two remaining birds is also decreasing day by day, and there is a danger of extinction at any time." "The change in this number clearly illustrates the harm that "biological invaders" do to the natural ecology.

Another example is that "in the United States alone, the economic losses caused by 'biological invaders' are as high as more than $200 billion every year", which shows that "biological invaders" are extremely harmful to human beings.

Give an example. Examples are used to support a point of view and make it more persuasive.

For example, the very limited time and space span of the breeding time and space of dandelions and fish and shrimp in mountain streams is given to demonstrate that "in the early days of human civilization, land and navigation technology were not yet developed, and the ecological balance in nature was not greatly damaged".

The invasion of North America by European spotted mussels, Asian longhorn beetles, and red ants from South America is a powerful illustration of the great harm that "biological invaders" have brought to humans.

The example of the near-extinction of the Palm Tree Snake is given to illustrate the destruction of the natural ecology by "biological invaders".

The examples of fresh fruits and vegetables, transnational pets are given to illustrate the artificial causes of "biological invaders".

The example of the U.S. House of Representatives' bill to strengthen cross-agency monitoring of vehicles that may carry alien species shows that countries around the world have taken corresponding measures to deal with "biological invaders".

Draw an analogy. For example, the concept of "biological invaders" is itself a metaphor, telling people that the actions of these "invaders" can bring harm to humans and nature, and that European spotsticks that land in North America are compared to "stowaways" who unwittingly land on the North American continent and quietly cause harm to humans.

The spread of pests all over the world along the ** route is likened to "taking a 'free ride' across borders".

These metaphors make the illustrations more vivid, more vivid, and more engaging to the reader.

Definition. For example, "'migrants' who originally lived in a foreign land and migrated to a new ecological environment through unnatural means are called 'biological invaders'", using the following method of explanation, accurately and concisely explains what biological invaders are, and introduces the essential characteristics of biological invaders: "illegal migration".

to interpret. When the current definition does not elaborate on the characteristics of a thing, it needs to be followed by a supplementary explanation of the characteristics of the thing, which is called interpretation.

For example, in the text, "they will not only destroy the original ecosystem of a certain area, but may also cause incalculable economic losses to human society", which is a supplementary explanation of the harm of biological invaders, and the dashes here play an explanatory role.

10. What is the example of the palm tree snake given in the first paragraph? Answer: Explain how "biological invaders" will affect the affected 3 What is the difference between biology and ecology? Answer: Biology: The study of the structure, function, occurrence and occurrence of living things.

Relationships between species, competition, predation, etc.