The two creatures have a common natural enemy, what is the relationship?

The two organisms have common natural enemies, and the intraspecific relationships of organisms include density effect, animal and plant sexual behavior, domain behavior, social hierarchy, communication behavior, and altruistic behavior.

Interspecific relationships include parasitism, symbiosis, competition, predation.

Intraspecific relationships: 1. Density effect.

A large number of experimental studies have revealed various mechanisms of the density effect. For example, when a pair of fruit flies are placed in a bottle and given a certain amount of food, the number of offspring increases rapidly at first and soon reaches a certain limit. However, when many fruit ropes are placed in the same bottle, the number of offspring produced by each pair of flies will be inversely proportional to the density of the flies in the bottle.

2. Animal and plant sexuality.

The mating system is one of the important research contents of animal behavioral ecology. In the long process of evolution, in addition to adapting to the environment in terms of morphological anatomy, physiology, biochemistry and genetics, animals also produced behaviors adapted to the environment, among which social behaviors such as marriage system, parental behavior, aggression and friendly behavior fully demonstrated the adaptability of animals to a specific environment in the community.

3. Domain Conduct.

A territory is a space that is selectively occupied by an animal or a particular group of animals and guarded and defended to the exclusion of individuals or groups of people of the same kind. The act of an animal occupying and defending a territory is called a domain act. Domain behavior actually plays a role in reducing the fighting between animals of the same species, and it is of great practical significance for controlling population density, promoting population stability, and inhibiting aggressiveness.

Fourth, social hierarchy.

Social hierarchies are fairly common in the animal kingdom and include many fish, reptiles, birds, and mammals. Through research, some general patterns have been obtained. Dominant individuals of higher status are usually subordinate individuals of lower status who are strong, heavy, sexually mature, and experienced in fighting.

The physiological basis for this is the presence of higher concentrations of the male hormone (testosterone) in the blood.

5. Acts of Communication.

No animal lives in isolation in nature, they always form a small living group. Although some prefer to be alone, at least they need to be in contact with the opposite sex when mating. In the process of contact, their chirping, touching each other, and even the release of some chemicals make them communicate with each other and act in unison, that is, there is a communication behavior between animals.

6. Altruistic behavior.

Altruistic behavior is another social interaction. Altruistic behavior refers to the act of sacrificing oneself for the benefit of the community as a whole or for other individuals. There are many examples of altruistic behavior, especially social insects.

When termite nests are opened, workers and larvae move inward, while soldier ants move outward to close the gap, showing the altruistic behavior of a "brave" colony defender.

Encyclopedia—Interspecific relationships.

Encyclopedia—Intraspecific relations.

It's hard to say, but it may be a predatory relationship, or it may be an interspecific competition.

The rat and the rabbit are in a competitive relationship, and they have a common natural enemy - the fox; Rats and snakes are predators and have a common natural predator - the eagle.

Hello, if two creatures have a common offset, then the two creatures are in competition because their common predator will only attack the weaker of the two creatures, and the weaker one will face a greater threat.

Hope it helps, this situation abounds, the food chain can explain that some organisms do not have any relationship, and some are symbiotic, and it is difficult to define the relationship between them, unless a specific organism is pointed out.

Summary. Hello, there is 1, parasitic relationship: refers to the relationship between one organism living in the body or body surface of another organism and ingesting nutrients from the latter to maintain life.

The former is called the parasite and the latter is called the host. 2. Predatory relationship: refers to the interspecific relationship in which one organism feeds on another organism.

The former is called a predator, and the latter is a ** eater. 3. Competition: There are two types of competition: intraspecific and interspecific.

This refers to an interspecific relationship in which two species live together and struggle for limited nutrition, space and other common needs.

Hello, there is 1, parasitic relationship: refers to the relationship between one organism living in the body or body surface of another organism, and taking nutrients from the latter to maintain life. The former is called the parasite and the latter is called the host.

2. Predatory relationship: refers to the interspecific relationship in which one organism feeds on another organism. The former is called a predator, and the latter is a ** eater.

3. Competition: There are two types of competition: intraspecific and interspecific. This refers to the interspecific relationship in which two species of cohabiting oak struggle together for limited nutrition, space, and other common needs of the world. Wish.

Animals have natural predators. For example, the natural enemy of a baby frog is a snake, the natural enemy of a snake is an eagle, and the natural enemy of a mouse is a cat ......But what are the natural enemies of human beings? It is as if people have no natural predators and eat everything.

Whether it's animals, plants or fish species, birds can be eaten by everyone. It can be said that human beings have no natural enemies, so do humans really have no natural enemies?

With the continuous development of the times and the evolution of human beings, in the past five hundred years, the vast majority of the populations on the earth have long been extinct, and the vast majority of them have more or less related to human activities. Humans are different from animals and plants, humans have concepts and wisdom, and humans will make some items to maintain their own safety, while animals and plants are different, they can only rely on themselves to avoid the attack of natural enemies.

Take the baby monkeys, for example, when their partners are damaged, they will resist in groups and resist their opponents, but what about humans? We make the war into movies and television, so that everyone is happy, and when we see people practicing martial arts on the street, they will be as prosperous as watching little monkeys, as an uncommon game entertainment festival for people to enjoy, animals fight and fight, often using front paws and lips, and human fights, in addition to the use of hands and feet, will continue to use a variety of **, and even use aircraft, artillery, nuclear bombs and other nuclear bombs, and in some cases will even solve a big city people at once.

Human beings really feel that there is nothing they can't do, and they feel that they are the smartest creatures in the world, but looking around the vast cosmic world, human beings are just a floating dust on the earth. The lifespan of a human life is so short, only a few short decades. It's just that a light that once existed in the starry sky of the universe could disappear in an instant.

And human beings are also weak in front of them, of course, to cope. Natural disasters such as typhoons, floods, and floods will disappear in an instant.

So, who are the natural enemies of human beings? In fact, there are really too many natural enemies of human beings, all kinds of substances in the universe and stars, and threats from nature are very likely to affect us, and the biggest natural enemies of human beings are actually us human beings.

Human natural enemies are bacteria, as well as various microorganisms, after these bacteria and microorganisms enter the human body, people will get sick or directly cause death.

Man's natural enemy is actually human himself, because if he can't have faith in himself, then he can defeat himself.

Nature. Human beings cannot resist the disasters of nature, which will deprive many human beings of their lives.

Viruses, bacteria, and some pests in society, such as rats and mosquitoes, can harm people's bodies.

1. Definitely. Invasive speciesAs the name suggests, the reason why invasive species can be called invasive species is because there are no natural enemies in the local area, resulting in mass reproduction, so that other local species compete for resources, resulting in a decrease in the number of native species, thus causing serious damage to the entire ecosystem with native species as the food chain. Therefore, if there are species with natural enemies, they cannot be called invasive species at all.

2. Not necessarily.

It is not necessarily because it is defined as an invasive species as long as it is an alien species.

So it's up to you to understand invasive species.

Beauveria bassiana is the natural enemy of corn borer, pine caterpillar and three-insect borer;

Bacillus borer is the natural enemy of rice leaf roller borer and corn borer;

The red-eyed bee is the natural enemy of the corn borer, the pine hair and the leaf borer;

The seven-star ladybug is the natural enemy of the cotton aphid.

The relationship between organisms and organisms is common: predation relationship, competition relationship, cooperative relationship, parasitic relationship, etc. However, there is also a cooperative and mutual assistance relationship between individuals of the same species, such as ants carrying cabbage worms together, bees guarding the hive, etc., so there are both intraspecific struggle and cooperation and mutual assistance between individuals of the same species. There are several ways of symbiosis, parasitism, predation, and competition between different organisms, and they are not necessarily all fighting against each other, such as symbiosis;

So the answer is:

Beauveria bassiana. Be.

Corn borer. Potato Qiao old.

Pine several liters of hairy insects.

Three-insect borer. predators;

Bactericides are.

Rice leaf roller.

The natural enemy of the corn borer;

Trichogramma. It is the natural enemy of corn borer, pine caterpillar and rice leaf roller;

Seven-star ladybug. Be.

Cotton aphid. predators;