This kind of connection is like an invisible net, which includes all living things and makes them have some direct or indirect relationship with each other. This is the concept of food web.
In order to maintain their own life activities, all kinds of organisms in the ecosystem must feed on other organisms. This food chain relationship is actually the relationship that solar energy is transferred from one organism to another, that is, material energy flows and transforms through the food chain.
A food chain generally includes 3-5 links: a plant, a plant-eating animal and one or more carnivores. The number of organisms in different links of the food chain is relatively constant to maintain natural balance.
Matters needing attention
1, the destruction of biological information system
Only through mutual information contact can organisms maintain their own clusters and reproduce normally. Man-made release of a substance into the environment interferes with or destroys the information connection between organisms, which may lead to imbalance or destruction of ecological balance.
2. Change environmental factors
For example, human production and life activities produce a lot of waste gas, waste water, garbage and so on. , continuously discharged into the environment; Unreasonable or predatory use of natural resources by human beings, such as blind land reclamation, deforestation, excessive reclamation of water surface, overloading of grassland, etc., will worsen environmental quality, have short-term or long-term effects, and make the ecological balance unbalanced.