Algae

Algae are simple, photosynthetic organisms found in water and moist environments. They can be microscopic, like phytoplankton, or larger forms like seaweed. Algae play a crucial role in ecosystems by producing oxygen and serving as a food source for many aquatic animals. They come in various colors, including green, brown, and red, depending on the pigments they contain. Algae are also important for humans, used in food, medicine, and biofuels. As primary producers, they help sustain aquatic food webs and contribute significantly to global oxygen production.