what are its ecological advantages?
They create natural habitat as part of an urban wilderness.
Green roof
Green roofs create natural habitat as part of an urban wilderness. 
which part of the atmosphere does weather occur On Earth, most weather phenomena occur in the lowest level of the planet's atmosphere, the troposphere. what are its effects on human being? Climatic changes cause gradual drift of populations, and at times, extreme weather conditions may also affect historical events. does space also has it? Atmosphere is present on the planets within the solar system. which place is recorded for its extreme nature? The coldest air temperature ever recorded on Earth is , at Vostok Station, Antarctica and the hottest at 'Aziziya, Libya. has the coldest place's name ever changed? "Terra Australis". which animals are found at this place? The flightless midge "Belgica antarctica". how has the global warming effected it? Rise in sea level. who had explored this place in the past? In January 1840, an expedition team was led by the United States Exploring Expedition, under Lieut. Charles Wilkes. which plants are found here? Mosses, liverworts, "Deschampsia antarctica",  "Colobanthus quitensis" , and "Poa annua". what is the first one classified into? They are divided into eight classes. what is its commercial use? Florist trade and in home decorations. and traditional use? It was used for bedding , insulation and clothing. what is the benefits of using it as roofs? Reduced weight loads, increased water absorption, no fertilizer requirements, and high drought tolerance. what is this roof's disadvantage? The initial installation cost can be double than that of a normal roof. does it come in different kinds? Yes, intensive, semi-intensive and extensive. does it help in energy conservation? Yes, it does. what is its significance in canada? The city of Toronto approved a by-law in May 2009 mandating green roofs on residential and industrial buildings.
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Green roof [SEP] Ecological benefits
Green roofs create natural habitat as part of an urban wilderness. Even in high-rise urban settings as tall as 19 stories, it has been found that green roofs can attract beneficial insects, birds, bees and butterflies. A recent list of the bee species recorded from green roofs (worldwide) highlights both the diversity of species, but also the (expected) bias towards small ground-nesting species (Hofmann and Renner, 2017). Rooftop greenery complements wild areas by providing stepping stones for songbirds, migratory birds and other wildlife facing shortages of natural habitat. Green roofs also serve as a green wall, filtering pollutants and carbon dioxide out of the air, helping to lower rates of diseases such as asthma.