A low retaining wall forms a well around the tree, allowing the roots of the tree to breathe.
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Q14: Q15: Retaining walls are used where gradual changes Q16: _ are similar to drives and walks Q17: The accompanying figure shows some typical symbols Q18: The last landscaping features to be planted Q20: Planters are sometimes included in the construction Q21: The accompanying figure shows some typical symbols Q22: Among trees, shrubs and lawns, which are Q23: The accompanying figure shows some typical symbols Q24: _ should be done to ensure that
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