What are some living things in the food web that are producers?

In a food web, producers are typically green plants and algae that convert sunlight into energy through photosynthesis. Examples include grasses, shrubs, and trees in terrestrial ecosystems, as well as phytoplankton and seaweeds in aquatic environments. These organisms form the base of the food web, providing energy for herbivores and, subsequently, for carnivores. Their role is crucial for sustaining the entire ecosystem.