What does alge feed on?

Algae primarily feed through photosynthesis, using sunlight, carbon dioxide, and water to produce energy. Some algae, particularly in low-light conditions or in nutrient-rich environments, may also absorb nutrients directly from their surroundings. In certain cases, specific types of algae can be heterotrophic, meaning they can consume organic matter or other organisms for energy. Overall, their primary mode of nutrition is through photosynthesis.