Fill in the table “Features of the internal structure of fish”.
| October 30, 2020 | Education
| Organ system name | Structural features |
| Respiratory system | Represented by gills |
| Digestive system | It starts with the mouth, there are teeth in the mouth. |
| Circulatory system | They have 1 circle of blood circulation and 2 chambers in the heart |
| Excretory system | Paired kidneys are present |
| Musculoskeletal system | There is an axial skeleton represented by a spine, there are ribs, fins, a tail |
| Nervous system | Brain and sense organs |
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.