(biology) Any of many aquatic photosynthetic organisms, whose size ranges from a single cell to giant kelps and whose form is very diverse; some are eukaryotic and some prokaryotic; includes the seaweeds.
Plants and phytoplankton —single-celled algae found near the surface of lakes and oceans— help to regulate carbon dioxide and oxygen levels in water and air.
რკინა, დაუმუშავებელი ან ნაწილობრივ დამუშავებულიjw2019 jw2019
Nutrition for the coral is supplied by algae (scientifically called zooxanthellae), which live in the polyp’s transparent body, and also by microscopic animals that are captured in the coral’s tentacles.
Then, when the chicks are old enough to walk, the parent birds suddenly leave their young behind and fly to another part of the lake, where the blue-green algae are richer and more abundant.
The sloth hosts the algae, and the algae return the favor by providing nutrients that the sloth either ingests by licking its fur or absorbs through its skin.