1 | defines the general properties of water plants |
10 | describe the stable water plants' bioecologic properties |
9 | tells about the isntruments and water plant sampling methods |
8 | defines the distrubition of stable water plants in water medium |
5 | describes the industrial usage of water plants |
6 | discusses the chemical and physical effects of water on water plants |
2 | differs the river plants |
3 | differs the stable water plants |
4 | differs the sea plants |
7 | discusses the role of plants on reducing water pollution |