What are some more producers besides trees and plants?

In addition to trees and plants, other producers include algae, which perform photosynthesis in aquatic environments, and certain bacteria, such as cyanobacteria, that can produce energy through photosynthesis. Some microorganisms, like chemosynthetic bacteria, can also produce organic compounds by converting inorganic substances, often in extreme environments like deep-sea vents. These producers form the foundation of various ecosystems by generating energy that supports other organisms.