1) Amoeba protects zoohlorella from external conditions and supplies it with the necessary nitrogen for nutrition.
2) The animal receives sugar from algae formed during photosynthesis. (Amoeba is transparent and photosynthesis is normal).
3) In addition, during photosynthesis, algae releases oxygen, and the animal uses it for respiration.
Remember: The process of learning a person lasts a lifetime. The value of the same knowledge for different people may be different, it is determined by their individual characteristics and needs. Therefore, knowledge is always needed at any age and position.