Gap Fill - Life on Mars - Level 2


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   any      discovery      enough      environment      evidence      highly      land      levels      life      new      plant      possible      radiation      rays      regions      surface      things      toxic      universe      what  
Scientists have found things about the on Mars. They found a " cocktail" of chemicals that would kill living thing. The chemicals are on the of the Red Planet. The scientists say the of the chemicals means the chance of finding on Mars is lower. The scientists are astrobiologists – they study the places in the that might support life. Mars has no ozone layer, which means there are high of ultra-violet (UV) radiation. The mix of UV radiation and the chemicals means it might be for anything to grow on Mars.

The scientists tested happens when the chemicals mix with UV . They found that just the chemicals were to kill living things. When the chemicals mix with UV rays, the mix kills living 11 times faster. The scientists said: "Our [findings] show that the surface of…Mars is [harmful] to cells, caused by a toxic cocktail of [chemicals] and UV ." They say their research is that the on Mars is deadly to any kind of life. They say the chemicals and UV rays make, "much of the surface and near-surface uninhabitable".

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