вставь пропущенные слова

Read the text. Use the words in capitals in the correct form so that they fit the text. Complete the gaps.

Stories of The Hanging Gardens of Babylon, one of the wonders of the ancient world, tell of a structure with green gardens on different levels many metres high. The gardens are long gone, but as our modern consumer society continues to drain the world of its resources, the population rises and food prices soar, a modern-day equivalent may soon be sprouting up in your neighbourhood!

According to UN statistics, by the year 2050, the population of planet Earth 1) ...... (RISE) to over 9 billion and feeding all these people will require extra farmland the size of Brazil. Finding enough agricultural land will be a real challenge, but one that some scientists believe they have solved with the idea of vertical farming. The idea is actually very simple. Just as an apartment block has different storeys, a vertical farm will have many different levels, growing a variety of fruit and vegetables. On one floor there 2) ...... (BE) lettuces, on the next floor carrots and on another tomatoes and so on. The walls will be made of glass to allow in sunlight, and instead of soil, the produce will be grown in a solution of nutrients and water.

Dr Dickson Despommier, a professor at Columbia University, points out that just one 30-storey building could provide food for 10,000 people. “With about 160 of these buildings, you could feed all New York,” he says. But as well as offering a solution to possible food shortages, this idea is environmentally friendly. Often, by the time food 3) ...... (ARRIVE) on your plate, it will have been travelling for days or even months! Vertical farms, however, will go up in the centre of the city and 4) ...... (POWER) by solar and wind power, so we'll save on transport costs, burn less fossil fuels and we'll all be eating fresh local produce from the skyscraper next door!

The idea isn't without its problems, though. Crops nearer the ground would get 5) ...... (MUCH) light which means they would grow quicker than crops farther away. The only whole floor to get direct sunlight would be the top one. Possible solutions include 6) ...... (HAVE) a permanent light source on every floor like the ones we now have in industrial greenhouses. At the moment, the price of building and lighting these modern Hanging Gardens of Babylon is far too high, but that 7) ...... (NOT/MEAN) we won't be able to do it soon. Mankind 8) ...... (FARM) horizontally for over 15,000 years, but now almost 80% of our farmland is already in use. Isn’t it about time we 9) ...... (START) growing up?