How many tiers are allocated in a mixed forest? What plants form different tiers?

How many tiers are allocated in a mixed forest? What plants form different tiers? Compare the tiered placement of plants in the forest and in the meadow. What causes the tier distribution of plants in the meadow.

Three: upper, middle, lower. Tall trees are the top; shrubs – medium; grasses – lower. In contact with them animals are placed in tiers.

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