Watch this video to find out how humans are trying to make rain.
Choose the right word(s) to complete the gap-text below.
  •  Due to the rapidly growing population and global warming, water becomes the world's most 

  •  One of the solutions to this problem can be found within 

  •  Scientists discovered that by dropping particles of a chemical called silver iodide into clouds, 

  •  Since then, countries all over the world have 
     to squeeze rain out of the clouds.

  •  spends more on cloud seeding than any other country in the world.

Match the sentences with the numbers that belong into the gaps.
  • More than   countries currently research on seeding programmes.
  • Currently there are   cloud seeding programmes going on.
  • An average cloud contains   million tons of rainwater.
  • Cloud seeding techniques originated in  
  • 8
  • 150
  • 1946
  • 47

Weiter lernen ...

Unser Lernportal versteht sich als Ergänzung zu anderen Lernformen. Das heißt unsere anwendungsnahen Übungen und Lerneinheiten sind besonders effektiv und hilfreich, wenn du sie mit anderen Lernformen kombinierst!
Wir empfehlen die Lernportale Babbel, Jicki und Rosetta Stone. Alle können kostenlos & unverbindlich getestet werden.