Gap-fill exercise

Fill in all the gaps with words from the list.
When finished, press "Check" to see the corrected text.
If you need help, use the "[?]" button to get a clue, or the "Hint" button for a free letter.
Note that you will lose points if you ask for hints or clues!
   approximately      areas      classified      climates      content      during      empire      for      grain      level      little      number      nutritional      rainfall      resistant      solution      staple      survive      thrives      Wider   
Quinoa is a tiny , which has been eaten in Bolivia 5000 years.
Cultivation was maximised the period of the Inca .
Quinoa was one of the three foods, along with corn and potatoes.
The grain at high altitudes of 9000 to 13000 feet above sea .
The plant can on as as two inches of and is frost .
It's adaptation to cold, dry , and its excellent qualities, make this crop
of considerable value to highland around the world.
Quinoa has been by the United Nations as a "super grain" because of its high protein : 14 - 18%, and an impressive of essential amino acids. It is a complete protein, close to the ideal.
consumption of this nutritious crop could be part of the to the malnutrition problem in Bolivia.