An example of a four-step water food chain could be: phytoplankton (primary producers) are consumed by zooplankton (primary consumers), which are then eaten by small fish (secondary consumers), and finally, larger predatory fish (tertiary consumers) prey on the small fish. This chain illustrates the flow of energy and nutrients from the primary producers at the bottom to the top predators in the aquatic ecosystem.
I think what you are referring to is a food chain, It is a series of energy steps from plants to animals and more animals in the form of food.
trophic level
It decreases.
The step by step sequence showing how organisms feed on each other is referred to as a food chain. A food chain represents the flow of energy from one organism to another in an ecosystem. Each step in the food chain is a trophic level and shows the transfer of energy and nutrients through the ecosystem.
The final step in the food chain is typically the top predator, such as apex predators like lions, sharks, or eagles. They are at the top of the food chain because they have no natural predators themselves.
whales
trophic levels.
food chain- grass->tipaklong->frog->snake->eagle->bacteria The different steps or levels of a food chain or web are called "trophic levels." They can also be characterized as producers or consumers. The consumers can be characterized as first order, second order, tertiary, etc. And then there are the scavengers and decomposers.
Zooplankton get their food from eating phytoplankton. The phytoplankton are the base of the food chain. Zooplankton are primary consumers or the second step in the food chain.
For each step in the food chain, would be classified as a Trophic Level.For example of a 4 level chain.Grass -> Grasshopper -> Frog -> Snake
Trophic Level
It's the highest point you can reach. For example, an "apex predator" means that they're on the top of the food chain. They have no natural enemies (unless humans step in), they eat any and every animal lower on the food chain, and they have nothing to fear.