Another name for blue-green algae isGroup of answer choicesthermophilescyanobacteriaarchaeaheterotrophsspirochetes

The correct answer is "cyanobacteria."

Explanation

Cyanobacteria, often referred to as blue-green algae, are a group of photosynthetic bacteria that thrive in various aquatic ecosystems. Despite their common name, cyanobacteria are not true algae; they belong to a separate domain of life. These organisms play a crucial role in environmental ecosystems by producing oxygen through photosynthesis and serving as a primary food source for various aquatic organisms. Their ability to fix atmospheric nitrogen makes them essential for nutrient cycling in many ecosystems.

In summary, cyanobacteria can be found in oceans, freshwater bodies, and moist soils, and they are known for their vibrant colors ranging from blue to green due to the photosynthetic pigments they contain, such as chlorophyll-a.