Answer:Green roofs act as natural insulation
Explanation:
would put a explanation but i took the test just now
A Green roof can help in saving costs by acting as natural insulation.
Green roofs refer to that roof which are fully or partially covered with soils and plants.
A green roof helps in providing good insulation for the buildings that helps in saving money. So, green roofs can help in saving money by being an insulation layer.
Therefore, D is the correct option.
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