Define the functional role of the following organisms in the ecosystem: 1) gray rat; 2) ladybug; 3) dragonfly; 4) mold fungi;

Define the functional role of the following organisms in the ecosystem: 1) gray rat; 2) ladybug; 3) dragonfly; 4) mold fungi; 5) heron; 6) spider-cross; 7) green grasshopper; 8) rabbit; 9) cereals; 10) frog; 11) tick; 12) Colorado potato beetle; 13) leeches; 14) algae; 15) bacteria.
On the right in the table, write the numbers of the organisms corresponding to each level. Give an example of a food chain of four to five trophic levels, choosing the necessary organisms from those proposed in the task.

Producers
9, 14
1st order consumables
1, 7, 8, 12
2nd order consumables
2, 3, 5, 6, 10
3rd order consumables
11, 13
Reducers
4, 15
Cereals -> Grasshopper -> Frog -> Heron -> Leech