Read the text and complete the gaps with the correct derivative of each word in capitals. \(Write the words in the line separated by commas\.\)

Both ... \(NOVEL\) and scientists have long wondered if Mars could ever be habitable. To colonise Mars we would need the basic ... \(REQUIRE\) for survival, such as air, water and a climate ... \(SUIT\) for food production.
In 2008, a space mission to Mars indicated that Martian soil is similar to Earth's, contains nutrients and is capable of supporting life. Another ... \(DISCOVER\) the scientists made is that there is ice below the surface of the planet. If the surface of Mars could be warmed by the release of greenhouse gases, the ... \(TRAP\) ice would melt and water would fill the valleys and craters.
... \(STRANGE\) enough, ... \(GLOBE\) warming, the very problem that threatens our planet, could be the solution to making another planet habitable. The ... \(COLONISE\) of Mars has always seemed like an ... \(POSSIBLE\) dream only to be found in science fiction but scientists are now pursuing ways to make is a ... \(REAL\) one day in the future.