• Algae are the primary producers in aquatic food chains.
• They release a lot of oxygen to the atmosphere.
• Some cause human diseases like malaria and amoebic dysentry ,sleeping sickness
• Some are source of food for humans e.g. sargassum is a source of iodine
• Skeletons of diatoms used in paint making.
Wilfykil answered the question on February 28, 2019 at 13:51
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