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Reading
Task 1. Read the text and put paragraphs А-C in the correct logical order.
It's Alive!
Green roofs! What a great idea, and so simple. Why didn't anybody think of this before? Well, actually they did. Green roofs, in the form of natural sod roofs, have been around for ages. Nowadays, these living roofs, also called eco-roofs, are a bit more complex than those from the past, but they are still sprouting up' in cities all over the world.
A. Are green roofs expensive to build? Green roofs are fairly expensive to construct and maintain (1) but with the money you save on heating and air-conditioning they pay for themselves in no time. And remember, even if you can't afford to have a 'real' green roof at the moment, you can do your part for the environment now by planting flowers or vegetables in p ts on the roof of your house or block of flats. B. What's so great about There are many benefits to having a green roof. To begin with, they look fantastic; they are a little patch of glorious (2) nature in the middle of an ugly concrete jungle. Secondly, they can reduce heating and cooling costs because they act as a kind of insulation for the building. Finally, green roofs give wildlife a place of their own, a natural habitat, in which to live. green roofs?
C. What exactly are green roofs? As you've probably already guessed, green roofs are not just roofs that have been painted green. By definition, a green roof is a roof of a building that is partly or totally covered in vegetation: rass, flowers, or any other kind of plant. Under the soil in which the vegetation grows are several layers which prevent (3) water and roots from damaging the original roof.
1) __
2) __
3) __​