Problem: It is an important source of renewable energy and its technologies are broadly characterized as either passive solar or active solar depending on the way they capture and distribute solar energy or convert it into solar power. Active solar techniques include the use of photovoltaic systems, concentrated solar power and solar water heating to harness the energy. Passive solar techniques include orienting a building to the Sun, selecting materials with favorable thermal mass or light dispersing properties, and designing spaces that naturally circulate air.
What is an example of a passive solar technique?
The answer is the following: orienting a building to the Sun

Problem: The initial prototype shown in May 2005 featured two HDMI ports, three Ethernet ports and six USB ports; however, when the system was shown again a year later at E3 2006, these were reduced to one HDMI port, one Ethernet port and four USB ports, presumably to cut costs. Two hardware configurations were also announced for the console: a 20 GB model and a 60 GB model, priced at US$499 (499) and US$599 (599), respectively. The 60 GB model was to be the only configuration to feature an HDMI port, Wi-Fi internet, flash card readers and a chrome trim with the logo in silver. Both models were announced for a simultaneous worldwide release: November 11, 2006, for Japan and November 17, 2006, for North America and Europe.
How many USB ports did the original PS3 prototype have?
The answer is the following: six

Problem: Asked about the liberal, non-democratic rule by a Chilean interviewer, Hayek is translated from German to Spanish to English as having said, "As long term institutions, I am totally against dictatorships. But a dictatorship may be a necessary system for a transitional period. [...] Personally I prefer a liberal dictatorship to democratic government devoid of liberalism. My personal impression and this is valid for South America is that in Chile, for example, we will witness a transition from a dictatorial government to a liberal government." In a letter to the London Times, he defended the Pinochet regime and said that he had "not been able to find a single person even in much maligned Chile who did not agree that personal freedom was much greater under Pinochet than it had been under Allende." Hayek admitted that "it is not very likely that this will succeed, even if, at a particular point in time, it may be the only hope there is.", he explained, however, "It is not certain hope, because it will always depend on the goodwill of an individual, and there are very few individuals one can trust. But if it is the sole opportunity which exists at a particular moment it may be the best solution despite this. And only if and when the dictatorial government is visibly directing its steps towards limited democracy".
At what point did Hayek claim dictatorships may be necessary?
The answer is the following: a transitional period

Problem: Queen have been recognised as having made significant contributions to such genres as hard rock, and heavy metal, among others. Hence, the band have been cited as an influence by many other musicians. Moreover, like their music, the bands and artists that have claimed to be influenced by Queen and have expressed admiration for them are diverse, spanning different generations, countries, and genres, including heavy metal: Judas Priest, Iron Maiden, Metallica, Dream Theater, Trivium, Megadeth, Anthrax, Slipknot and Rage Against the Machine; hard rock: Guns N' Roses, Def Leppard, Van Halen, Motley Crue, Steve Vai, the Cult, the Darkness, Manic Street Preachers, Kid Rockand Foo Fighters; alternative rock: Nirvana, Radiohead, Trent Reznor, Muse, Franz Ferdinand, Red Hot Chili Peppers, Jane's Addiction, Faith No More, Melvins, the Flaming Lips, Yeah Yeah Yeahs and The Smashing Pumpkins; pop rock: Meat Loaf, The Killers, My Chemical Romance, Fall Out Boy and Panic! At the Disco; and pop: Michael Jackson, George Michael, Robbie Williams, Adele, Lady Gaga and Katy Perry.
Several groups from which type of metal were influenced by Queen?
The answer is the following:
heavy metal