5. Scientists are looking for - of life on Mars and on the other planets. a) evidence b) formation 6. The Sun makes up 998 per cent of the mass of the - - solar system. a) ancient b) entire 7. The first picture of the north - of Mars was taken by Mars Reconnaissa nce Orbiter in 2006. a) polar cap b) evidence 8. The five main - of the atmosphere are the esosphere, thermosphere and exosphere. a) canyons b) layers

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5. Scientists are looking for - of life on Mars and on the other planets. a) evidence b) formation 6. The Sun makes up 998 per cent of the mass of the - - solar system. a) ancient b) entire 7. The first picture of the north - of Mars was taken by Mars Reconnaissa nce Orbiter in 2006. a) polar cap b) evidence 8. The five main - of the atmosphere are the esosphere, thermosphere and exosphere. a) canyons b) layers

Answer 1

5. Scientists are looking for evidence of life on Mars and on the other planets.6. The Sun makes up 98 per cent of the mass of the entire solar system.7. The first picture of the north polar cap of Mars was taken by Mars Reconnaissance Orbiter in 2006.8. The five main layers of the atmosphere are the exosphere, thermosphere, and mesosphere.

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