Answer:
The correct option is D. Green roofs can be expensive to install.
Explanation:
There are two main disadvantages of green roofs.
Number 1: Green roofs are very expensive. Their installation takes twice the money of conventional roofs.
Number 2: The maintenance of green roofs is hard and expensive. And one might need to hire workers for it. Hence, increasing the expense again.
Apart from this, the green roofs can also cause leakage and hence have to be checked at least once every year.
Answer:
1)
Q: What is a potential benefit of using alley cropping?
A: slowing soil erosion
2)
Q: Which of the following is a challenge when implementing green roofs?
A: Green roofs can be expensive to install.
3)
Q: Drag each phrase to the correct column to indicate whether it is a benefit or challenge of creating urban green spaces.
A: benefit (column 1): increasing property values, reducing greenhouse gases, providing locations for exercise and relaxation
challenge (column 2): finding sufficient space, ensuring trial safety and maintenance
4)
Q: How did the removal of homes and businesses off the floodplain turn into a benefit for the city of Grand Forks?
A: The floodplain was turned into a large recreational area.
5)
Q: Why is alley cropping considered a sustainable farming practice?
A: It allows farmers to meet current needs while preserving resources.
6)
Q: A town's large sugar beet processing factory is destroyed in a flood. Which of the following is a likely consequence in the next few months?
A: The price of sugar beets will increase.
7)
Q: How does the regulation of floodplains help to reduce flood damage?
A: It limits what can be built on a floodplain.
Explanation:
took test
these r all correct answers
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