Scientists have found a kind of poisonous chemical on Mars. It would kill any living thing. The scientists say the discovery of the chemical means the chance of finding life on Mars is very low. Mars has no ozone layer(臭氧层). This means there are high levels of ultra-violet (紫外线) radiation. This mixes with the chemicals and makes it impossible for anything to grow on Mars.
The scientists said that just the chemical was enough to kill living things. When they mix with ultra-violet rays, the mix kills living things 11 times faster. The scientists said, "The surface of Mars is highly harmful to cells, caused by the poisonous chemical and ultra-violet radiation." They say their research is evidence that the land on Mars is deadly to any kind of living things. They say the chemical and ultra-violet rays make much of the surface and near-surface regions uninhabitable.
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13929108067 Jul 27, 2019 5:03:41 PM
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