the kind that grows
Algae
What is the herbivore in the following food chain: algae → fish → herons?
decomposers.
The step would be the food chain. In this case the big fish is at the top of the food chain and the algae would be at the bottom.
Algae feed small fish which starts the food chain.
a food chain always starts with a green plant and the arrows show which way the energy travels. e.g- oak tree- catterpilar- blue tit but also, if you properly did a food chain it would start with the sun.
Every food chain necessarily begins with an organism that doesn't eat any other organism (if it did eat another organism, it would not be the beginning of the food chain) which is technically known as an autotroph. We are generally familiar with organisms that conduct photosynthesis, although that is not the only kind of autotroph; there are also bacteria which metabolize minerals coming from underwater vents, which live symbiotically in vent worms.
food chain in pond: Algae -->Protozoa-->Small Fish --> Big fish
Algae form the main basis of the aquatic food chain.
sharks,fish,algae
Community and population are related because they both depend on each other for things such as food and shelter and many more things. :) >(^^,)<
fish eat algae and bigger fish like sharks eat the fish