In order to maintain their own life activities, all kinds of organisms in the ecosystem must take other organisms as food, which is a chain relationship linked by food. This feeding relationship is actually a relationship in which solar energy is transferred from one organism to another, that is, material energy flows and converts through the food chain.
Food chain efficiency:
Food chain efficiency refers to the ratio between energy output and input of a certain trophic level. It is the ratio of any one of various energy flow parameters between trophic levels or within trophic levels, which is usually expressed as a percentage and can also be called transfer efficiency. The energy parameters used to describe the food chain efficiency include food intake, assimilation amount, respiration and production.
Extended data
Types of food chain:
1, predatory food chain. It is based on plants, and the latter preys on the former. Like grass, a rabbit, a fox and a wolf.
2. The predatory food chain. Refers to the food chain formed on the basis of broken food. Such as leaf fragments and microalgae-shrimp (crab)-fish-eating birds.
3. Parasitic food chain. Based on large animals, a food chain formed by small animals parasitizing on large animals. Such as mammals-fleas-protozoa-protozoa-bacteria-viral.
reference data
Baidu encyclopedia-food chain