Question

Создать 3 пищевые цепочки для 3 любых лесных ярусов.

Answer 1

Для тайги 
1. листовой опад - дождевой червь - землеройка - сова - лисица; 
2. Кедровые орешки - белка - россомаха. 
3. растительный перегной - почвенные бактерии - простейшие - грибы- - черви. 

для смешанных лесов 
1. береза-заяц-волк-бактерии гниения 
2. древесина дерева-личинки-дятел-бактерии гниения 

для широколиственных лесов 
1. насекомое-рептилия-тушканчик(харек)-рысь(медведь) 

берешь то что там водится или растет и пишешь

Answer 2

Food chains in the forest floor layer

One possible food chain in the forest floor layer is: Dead leaves → Snails → Earthworms → Moles Dead leaves fall to the forest floor and provide nutrients as they decompose. Snails feed on the decomposing leaves and other plant matter. Earthworms feed on the dead leaves and organic matter in the soil. Moles feed on earthworms and other invertebrates found in the topsoil.

Food chains in the understory layer

An example food chain in the understory layer is: Shrubs → Caterpillars → Birds → Hawks Shrubs and other understory plants produce leaves and fruits. Caterpillars feed on the leaves of shrubs and small trees. Various bird species such as warblers feed on the caterpillars. Larger birds of prey like hawks feed on the smaller birds.

Food chains in the canopy layer

A possible food chain in the canopy layer involves: Tree leaves → Aphids → Ladybird beetles → Frogs Tree leaves in the canopy are fed upon by aphids, which suck the sap from the leaves. Ladybird beetles are predators that feed on aphids. Tree frogs may sit on branches and feed on the ladybird beetles.