2.how do green roofs compare to traditional roofs?
green roofs have greater stormwater runoff.
green roofs need more frequent replacement.
green roofs initially cost more to install.
green roofs have less impact on the energy performance of buildings
3.why is beach nourishment considered mostly a short-term strategy for fighting beach erosion?
it is expensive.
it takes a long time to find the materials.
it must be repeated every 5 to 7 years.
it requires heavy machinery.
4.which of the following is a negative impact that flooding can have on the environment?

reduction of microbial populations
recharging of groundwater
damage to infrastructure
distribution of organic material
5.drag each effect of agroforestry in the rain forest to indicate whether it is a cost or a benefit.
costs benefits
higher start-up expensives, higher amount of nitrogen in soil, increased need for labor, increasing numbers of pollinating insects, higher amount of carbon storage
6.drag each phrase to indicate which flood mitigation technique it describes.
floodplain management stormwater management elevated structures
raises structures above flood level, enhanced by the addition of urban green spaces, protects buildings in low-lying areas prone to floods, used mainly on the coast, reduces water runoff into streets, lawns, and other sites
7.drag each phrase into the correct column for the beach erosion strategy it describes.
jetty beach nourishment seawall

prevents erosion by directing waves back to ocean, hard structure built perpendicular to shore, hard structure that also provides flood protection, brings in more sand to replace erosion, can cause sand buildup on up-drift side of structure
8.drag each phrase describing flood mitigation projects to the appropriate box to indicate whether it is a cost or a benefit.
cost benefit
ongoing maintenance, initial design and construction, employment opportunities, protection of infrastructure, lower insurance costs,
9.drag each sustainable farming practice to indicate whether it is best suited for the desert, the rain forest, or mountains.
desert rain forest mountains
hydroponics, ally cropping, terrance farming, greenhouses
10.when creating an urban green space, which of the following needs to be determined in order for the space to provide the most benefit to the most people?

the proximity of the space to the city's population
the quality of the existing soil
the number of amenities near the space
the kinds of plants that are native to the area