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.
Green roof
The city of Toronto approved a by-law in May 2009 mandating green roofs on residential and industrial buildings.
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.
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Green roof [SEP] Canada
The city of Toronto approved a by-law in May 2009 mandating green roofs on residential and industrial buildings. There is criticism from Green Roofs for Healthy Cities that the new laws are not stringent enough, since they will only apply to residential building that are a minimum of six stories high. By 31 January 2011, industrial buildings were required to render 10% or of their roofs green. Toronto City Hall's Podium roof was renovated to include a rooftop garden, the largest publicly accessible roof in the city. The green roof was opened to the public in June 2010. Many green roofs in Canada also use sustainable Rainwater harvesting practices.