Asked in PPSC, FPSC and other one-paper exams (compiled from unofficial resources).
Environment, Weather & EcologyGreenhouse Effect and Global Warming
Greenhouse walls are usually made of?
- A.Wood
- B.Plastic
- C.GlassCorrect answer
- D.Concrete
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Practice these MCQs in the appQuick fact: Greenhouse walls are usually made of glass because it allows sunlight to enter while trapping heat inside.