Examples of biological invaders, specifically

In the mid-19th century, a European explorer came to the Mexican jungle and saw the plant called "Merconia" for the first time. It belongs to the wild peony family, usually more than ten meters tall, without flowers, but with wide and thick leaves - the sunny side is green, while the shaded side is bright purplish-red, very special and beautiful. Intrigued by the Mykonia, the explorers harvested its leaves and fruits, and brought it back to the European continent along with other exotic objects.

In 1961, a European gifted a packet of Mekonian seeds to a botanical garden in Hawaii. The "Merconia" was very vigorous and multiplied quickly, and it was not long before "Merconia" was sold to nurseries and became a popular ornamental plant on the island of Hawaii.

But no one discovered at the time that "Mykonia" was a very destructive plant, and its arrival would bring a lot of changes to the land.

Experts point out that although the growth of plants seems to be peaceful and uncontested, in fact, the world of plants, like the animal kingdom, is full of battles between the jungle and the jungle. Plants with strong viability tend to plunder and destroy the survival resources of other plants.

Merconia is one of them. Another alien creature, the dark green embroidery-eyed bird from Japan, has inadvertently become the "**" of Mykonia. The dark green-eyed bird is very fond of eating the fruit of the Mykonia, although the fruit of this plant is small, with hundreds of seeds in each fruit.

After eating the fruit, the dark green embroidery-eyed bird becomes a volunteer sower, flying freely through the jungle while scattering the undigested seeds in all directions.

Because there are no natural predators in the Hawaiian "Merconia", but there is a suitable temperature for its growth, fertile soil, and plenty of sunlight and water, so that each plant can stretch out to the fullest, absorb water and nutrients, and occupy space. In just over 40 years, the Big Island of Hawaiʻi's "Merconia" has covered an area of 10,000 acres, or about 4,000 hectares. The tall, straight "Merconya" plant is like a large green umbrella, and in its shadow, Hawaii's dwarf native plants gradually wither and die because they do not receive enough sunlight, water and nutrients.

These native plants originally relied on to conserve the island's precious fresh water and feed the many animals that feed on it. What's even more terrifying is that the attenuation of the survival of dwarf plants has also led to the increasing loosening of the soil in the forest, which is facing hidden dangers such as mudslides at any time. Faced with such tenacious vitality and irresistible destructive power of McConia, biologists likened it to a "green cancer".

Water hyacinth, red ants, American beetles, and the like.

The American white moth also had a large-scale epidemic a few years ago.

Example German cockroach, native to Germany. Transported to China through international ** commodities. The German cockroach gradually spread to the whole country, and according to the relevant data of the National Center for Disease Control and Prevention, a female German cockroach can produce up to one million offspring a year.

With the extensive use of insecticides for control purposes, the German cockroach has become extremely resistant and most insecticides are ineffective. Due to the existence and difficulty of preventing and controlling the German cockroach, cockroaches have replaced rats as the first of the four pests!

First, invasive alien species can seriously damage biodiversity and accelerate species extinction.

Second, the invasion of alien species will seriously damage the ecological balance.

Third, invasive alien species pose a direct threat to the survival of other organisms and even to human health due to the pathogenic microorganisms they may carry.

Fourth, the introduction of alien species will also cause huge economic losses to the affected countries.

It can't be shorter, it won't make sense if it's shorter. It's not appropriate not to give a point, but it's time to add points to write so much.